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CBSE Class 7ScienceQuestions & AnswersChapter level

Adolescence: A Stage of Growth and Change

Chapter-wise questions and answers for Adolescence: A Stage of Growth and Change in Class 7 Science, with a clear summary, key points, and exam-ready model answers.

What you will find on this page: a clear chapter summary, revision notes, word meanings, important questions, MCQs, and exam-ready question answers for Class 7 Science.

After reviewing the chapter explanation, answer the short-answer, long-answer, extract-based, and objective questions below.

About 62 min readadolescence-a-stage-of-growth-and-changeUpdated 15 Sep 2026
150 questions

Question 1: Adolescence generally begins around the age of: (a) 5 years (b) 10 years (c) 19 years (d) 15 years

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(b)

Question 2: Adolescence usually lasts until the age of about: (a) 19 years (b) 25 years (c) 12 years (d) 15 years

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(a)

Question 3: Adolescence is the stage of development between: (a) Adulthood and old age (b) Birth and infancy (c) Childhood and adulthood (d) Infancy and childhood

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(c)

Question 4: Which of the following is the correct order of the stages of human life? (a) Childhood → Infancy → Adulthood → Adolescence → Old age (b) Infancy → Adolescence → Childhood → Adulthood → Old age (c) Infancy → Childhood → Adulthood → Adolescence → Old age (d) Infancy → Childhood → Adolescence → Adulthood → Old age

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(d)

Question 5: Until around 10–12 years of age, most changes in the human body are related to: (a) Reproduction (b) Hormones only (c) Height and weight (d) Voice only

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(c)

Question 6: The period of rapid growth and development, typically occurring between 10–19 years, is called: (a) Infancy (b) Childhood (c) Old age (d) Adolescence

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(d)

Question 7: The voice of adolescent boys becomes hoarse due to the growth of the: (a) Voice box (b) Lungs (c) Tongue (d) Adam's apple only

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(a)

Question 8: The bump seen in the throat region of adolescent boys due to the growth of the voice box is called: (a) Thyroid (b) Goitre (c) Adam's apple (d) Vocal cord

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(c)

Question 9: In adolescent girls, the voice box: (a) Does not grow at all (b) Disappears (c) Grows bigger than in boys (d) Grows but is not as big as in boys, causing only slight changes in voice

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(d)

Question 10: Growth of hair in the armpits and pubic region occurs in: (a) Boys only (b) Neither boys nor girls (c) Both boys and girls (d) Girls only

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(c)

Question 11: Acne is a skin condition during adolescence caused by: (a) Growth of the voice box (b) Lack of exercise (c) Deficiency of iron (d) Increase in oily secretions from the skin that clog skin pores

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(d)

Question 12: Which of the following is a secondary sexual characteristic? (a) Change in voice (b) Growth of facial hair in boys (c) All of these (d) Development of breasts in girls

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(c)

Question 13: Secondary sexual characteristics are changes that: (a) Occur only during old age (b) Are directly involved in reproduction (c) Occur only in girls (d) Help distinguish males from females but are not directly involved in reproduction

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(d)

Question 14: Puberty is the stage in which the body of an adolescent: (a) Undergoes external and internal changes to develop into an adult capable of reproduction (b) Stops growing (c) Is marked only by a change in height (d) Loses the ability to reproduce

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(a)

Question 15: The onset of puberty is marked by: (a) Decrease in height (b) Loss of hair (c) Secondary sexual characteristics (d) Old age

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(c)

Question 16: The menstrual cycle generally recurs every: (a) 28–30 days (b) 60 days (c) 100 days (d) 7–10 days

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(a)

Question 17: In healthy girls, the menstrual cycle may range from: (a) 45–55 days (b) 21–35 days (c) 90–100 days (d) 10–15 days

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(b)

Question 18: The phase of the menstrual cycle during which blood discharge occurs from the body is called: (a) Ovulation (b) Conduction (c) Menstruation (d) Puberty

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(c)

Question 19: Menstruation may last for about: (a) 3–7 days (b) 15–20 days (c) One month (d) 1–2 days

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(a)

Question 20: Menstruation usually stops naturally by the age of: (a) 20–25 years (b) 60–70 years (c) 30–35 years (d) 45–55 years

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(d)

Question 21: During menstruation, some girls may feel pain or discomfort in the: (a) Hands (b) Lower abdomen (c) Feet (d) Head

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(b)

Question 22: Which of the following is a myth about menstruation mentioned in the chapter? (a) Menstrual cycles may vary from person to person (b) Menstruation is a natural process (c) Menstruation is a sign of good reproductive health (d) Physical isolation of menstruating girls is necessary

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(d)

Question 23: Which of the following is an emotional change commonly seen in adolescents? (a) Decrease in height (b) Wrinkles (c) Mood swings (d) Loss of sight

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(c)

Question 24: A positive way to deal with mood swings, according to the chapter, is to: (a) Isolate oneself (b) Engage in varied activities like music, dance or sports (c) Avoid all activities (d) Skip meals

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(b)

Question 25: Strong emotions in adolescents can lead to positive outcomes such as: (a) Compassion and involvement in social work (b) Loss of interest in everything (c) Better digestion (d) Increased anger only

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(a)

Question 26: Which nutrients are needed for proper growth and to perform well on the playground? (a) Only fats (b) Proteins and carbohydrates (c) Only water (d) Only vitamins

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(b)

Question 27: Milk, millets, curd, cheese and paneer are good sources of: (a) Calcium (b) Iodine (c) Vitamin C (d) Iron

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(a)

Question 28: Calcium in the diet of adolescents helps in: (a) Improving eyesight (b) Formation of blood (c) Voice changes (d) Optimal bone growth

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(d)

Question 29: Spinach, kidney beans, raisins and figs are rich in: (a) Fats (b) Iron (c) Proteins (d) Calcium

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(b)

Question 30: Iron in our diet helps in the: (a) Formation of blood (b) Growth of hair (c) Formation of bones (d) Strengthening of voice box

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(a)

Question 31: Adolescents, especially girls, may suffer from blood-related health problems due to a deficiency of: (a) Proteins (b) Calcium or vitamin D (c) Iron or vitamin B (d) Carbohydrates

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(c)

Question 32: Dorothy Hodgkin, who won the 1964 Nobel Prize in Chemistry, studied the structure of: (a) Calcium (b) Haemoglobin (c) Iron (d) Vitamin B12

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(d)

Question 33: Dorothy Hodgkin was which woman to win the Nobel Prize in Chemistry? (a) Second (b) Third (c) Fifth (d) First

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(b)

Question 34: Like most vitamins, vitamin B12: (a) Cannot be made in the human body and must be obtained from food (b) Is produced by the voice box (c) Is needed only by girls (d) Is made in the human body

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(a)

Question 35: Maintaining body hygiene during adolescence is especially important in the: (a) Ears and eyes (b) Hair only (c) Armpits and the pubic region (d) Nails only

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(c)

Question 36: Menstrual hygiene can be maintained using: (a) Sanitary pads and reusable cloth pads (b) Plastic sheets (c) Cotton wool only (d) Paper napkins only

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(a)

Question 37: Used sanitary pads should be disposed of by: (a) Burning them in the classroom (b) Wrapping them in newspaper and disposing inside a dustbin (c) Flushing them in toilets (d) Throwing them in open drains

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(b)

Question 38: Which of the following is environment-friendly? (a) Biodegradable sanitary pads (b) Synthetic pads (c) Plastic pads (d) Foam pads

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(a)

Question 39: Under the Menstrual Hygiene Scheme (MHS), sanitary pads are provided free or at a reduced price to adolescent girls in: (a) Urban malls (b) Only hospitals (c) Only colleges (d) Rural areas

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(d)

Question 40: Rashtriya Kishor Swasthya Karyakram (RKSK) encourages: (a) Only sports education (b) Peer education, where older students help younger ones learn about health topics (c) Only cooking classes (d) Only online games

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(b)

Question 41: The Suvidha Sanitary Napkin Initiative provides biodegradable sanitary pads at affordable prices through: (a) Airports (b) Post offices (c) Jan Aushadhi Kendras (d) Railway stations

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(c)

Question 42: The 'Shuchi Scheme' is a state-level initiative of: (a) Kerala (b) Karnataka (c) Rajasthan (d) Punjab

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(b)

Question 43: Which of these states has a free sanitary napkin scheme in government schools? (a) None (b) Only Gujarat (c) Only Delhi (d) Tamil Nadu and Odisha

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(d)

Question 44: Regular exercise and physical activities during adolescence: (a) Stop growth (b) Weaken the body (c) Keep the body and mind fit, build stamina and boost mood (d) Cause acne

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(c)

Question 45: Cyberbullying involves the use of: (a) Digital devices and online platforms to harass others (b) Written letters only (c) Only physical force (d) Only verbal shouting

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(a)

Question 46: Which of the following is an example of cyberbullying? (a) Playing outdoor games (b) Respecting others' privacy (c) Spreading false rumours online (d) Helping a classmate with homework

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(c)

Question 47: If someone tries to bully you online, you should: (a) Handle it wisely and seek help from parents and teachers (b) Share more personal information (c) Feel scared and helpless (d) Reply with more rude messages

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(a)

Question 48: Which of the following is a harmful and addictive substance mentioned in the chapter? (a) Spinach (b) Milk (c) Fruit juice (d) Tobacco, gutka, cigarettes, beedi or alcohol

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(d)

Question 49: Once people start consuming addictive substances, they develop a strong urge to take them again and again. This is called: (a) Peer education (b) Substance abuse (c) Balanced diet (d) Counselling

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(b)

Question 50: Which of the following is NOT a health problem caused by harmful addictive substances? (a) Increase in height (b) Damage to the lungs (c) Memory loss (d) Breathing difficulties

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(a)

Question 51: The first step to overcoming addiction is: (a) Hiding the problem (b) Seeking help and support from family, friends and trusted people (c) Ignoring it (d) Consuming more of the substance

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(b)

Question 52: The National De-addiction Helpline number is: (a) 101 (b) 108 (c) 100 (d) 14446

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(d)

Question 53: The Nasha Mukt Bharat Abhiyaan was launched by the: (a) Ministry of External Affairs (b) Ministry of Defence (c) Ministry of Social Justice and Empowerment (d) Ministry of Railways

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(c)

Question 54: The changes that take place in the body during adolescence are primarily controlled by: (a) Hormones (b) Viruses (c) Bacteria (d) Vitamins only

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(a)

Question 55: Mary, an 11-year-old girl, developed a bulge on the front of her neck. The doctor asked her to take an iodine-rich diet. This condition differs from Manoj's bump because his bump was: (a) Due to lack of exercise (b) A disease requiring surgery (c) A normal part of growing up (Adam's apple) (d) Caused by junk food

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(c)

Question 56: Adolescence is a stage of development between childhood and ______, typically occurring between the ages of 10–19.

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adulthood

Question 57: The growth of the voice box in adolescent boys appears as a bump in the throat called the ______.

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Adam's apple

Question 58: Secondary sexual characteristics are natural signs that the body is preparing for adulthood and mark the onset of ______.

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puberty

Question 59: The phase of the menstrual cycle when blood discharge occurs from the body is referred to as ______.

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menstruation

Question 60: Usually, by the age of 45–55, menstruation stops naturally, marking the end of the ______ capability in a woman's life.

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reproductive

Question 61: Acne occurs due to an increase in ______ secretions from the skin during adolescence that can clog the skin pores.

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oily

Question 62: The changes that take place in the body during adolescence are primarily controlled by certain chemicals called ______.

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hormones

Question 63: Spinach, kidney beans, raisins and figs are rich sources of ______, which helps in the formation of blood.

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iron

Question 64: Milk, millets, curd, cheese and paneer provide ______, which helps in optimal ______ growth.

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calcium, bone

Question 65: Used sanitary pads should be wrapped in ______ and disposed of inside a ______.

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newspaper, dustbin

Question 66: The Suvidha Sanitary Napkin Initiative provides ______ sanitary pads at affordable prices through Jan Aushadhi Kendras.

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biodegradable

Question 67: Cyberbullying involves the use of digital devices to harass others by sending misleading messages, spreading false rumours, or sharing personal information without ______.

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consent

Question 68: Once people start consuming addictive substances, they develop a strong urge to take them again and again. This is called substance ______.

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abuse

Question 69: The National De-addiction Helpline number is ______.

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14446

Question 70: Hormones are released at an appropriate time in response to signals from the ______.

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brain

Question 71: Each person experiences the stages of life at their own pace, and the duration of each stage may vary.

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True

Question 72: The Adam's apple is clearly noticeable in every individual.

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False (it is not noticeable in every individual)

Question 73: The voice box does not grow at all in adolescent girls.

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False (it grows but is not as big as in boys, leading to only slight voice changes)

Question 74: Acne is a condition while pimples are a manifestation of it.

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True

Question 75: Variations in the timing and extent of changes during adolescence are completely normal.

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True

Question 76: The menstrual cycle is a sign of poor reproductive health.

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False (it is one of the signs of good reproductive health)

Question 77: The physical isolation of menstruating girls has a strong scientific basis.

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False (such myths have no scientific basis)

Question 78: Adolescence brings only physical changes, like growing taller or developing body hair.

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False (it also brings emotional and behavioural changes)

Question 79: Menstruation may last for three to seven days.

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True

Question 80: Adolescent boys need proteins but adolescent girls do not.

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False (both boys and girls need a nutritious diet including proteins)

Question 81: Vitamin B12 can be made inside the human body.

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False (it cannot be made in the human body and must be obtained from food)

Question 82: Regular exercise during adolescence builds stamina and boosts mood.

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True

Question 83: Sharing personal photos with strangers on social media is a safe practice.

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False (one should be cautious when uploading pictures or sharing personal information with strangers)

Question 84: If someone tries a harmful substance once, they can always stop anytime they want.

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False (addictive substances create a strong urge to take them again and again)

Question 85: Seeking guidance from elders and teachers can help adolescents use social media positively.

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True

Question 86: Set 1 | Column A | Column B | |---|---| | A. Adam's apple | 1. Every 28–30 days | | B. Menstrual cycle | 2. Growth of voice box in boys | | C. Acne | 3. Hormones | | D. Changes of adolescence controlled by | 4. Pimples on the face | | E. Stage of becoming capable of reproduction | 5. Puberty |

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A–2, B–1, C–4, D–3, E–5

Question 87: Set 2 | Column A | Column B | |---|---| | A. Spinach, raisins | 1. Calcium | | B. Milk, curd, paneer | 2. Iron | | C. Suvidha Initiative | 3. National De-addiction Helpline | | D. Helpline 14446 | 4. Jan Aushadhi Kendras | | E. Cyberbullying | 5. Harassment using digital devices |

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A–2, B–1, C–4, D–3, E–5

Question 88: A: Adolescents should eat a nutritious diet. R: Adolescence is a period of growth and development marked by several changes in the body. (a) A is true but R is false. (b) Both A and R are true and R is the correct explanation of A. (c) Both A and R are true but R is not the correct explanation of A. (d) A is false but R is true.

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(b)

Question 89: A: The voice of adolescent boys often sounds hoarse. R: The voice box in boys grows bigger, appearing as the Adam's apple. (a) A is false but R is true. (b) A is true but R is false. (c) Both A and R are true but R is not the correct explanation of A. (d) Both A and R are true and R is the correct explanation of A.

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(d)

Question 90: A: Secondary sexual characteristics are directly involved in reproduction. R: Secondary sexual characteristics help distinguish males from females. (a) Both A and R are true and R is the correct explanation of A. (b) A is true but R is false. (c) A is false but R is true. (d) Both A and R are true but R is not the correct explanation of A.

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(c)

Question 91: A: The menstrual cycle is a natural process. R: The menstrual cycle is one of the signs of good reproductive health. (a) A is false but R is true. (b) A is true but R is false. (c) Both A and R are true but R is not the correct explanation of A. (d) Both A and R are true and R is the correct explanation of A.

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(d)

Question 92: A: Physical isolation of menstruating girls is a scientific practice. R: Myths and taboos about menstruation have no scientific basis. (a) Both A and R are true and R is the correct explanation of A. (b) A is false but R is true. (c) A is true but R is false. (d) Both A and R are true but R is not the correct explanation of A.

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(b)

Question 93: A: Adolescents should maintain personal hygiene, especially in armpits and the pubic region. R: Maintaining body hygiene may protect us from potential infections. (a) A is false but R is true. (b) Both A and R are true but R is not the correct explanation of A. (c) A is true but R is false. (d) Both A and R are true and R is the correct explanation of A.

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(d)

Question 94: A: Iron deficiency can cause blood-related health problems in adolescents. R: Iron helps in the formation of blood in our body. (a) A is true but R is false. (b) Both A and R are true and R is the correct explanation of A. (c) A is false but R is true. (d) Both A and R are true but R is not the correct explanation of A.

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(b)

Question 95: A: One trial of an addictive substance can be stopped anytime easily. R: Addictive substances create a strong urge to consume them again and again. (a) Both A and R are true and R is the correct explanation of A. (b) A is false but R is true. (c) A is true but R is false. (d) Both A and R are true but R is not the correct explanation of A.

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(b)

Question 96: What is adolescence? State the age group in which it usually occurs.

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Adolescence is the stage of development between childhood and adulthood, marked by rapid growth and development. It typically occurs between the ages of 10 and 19 years.

Question 97: List any four changes commonly observed during adolescence.

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Increase in height; weight gain; change in voice; growth of hair in armpits and pubic region (also: pimples/acne, breast development in girls, facial hair in boys).

Question 98: What is the Adam's apple?

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The growth of the voice box in adolescent boys is seen as a bump in the throat region, called the Adam's apple; it leads to a hoarse voice. It is not noticeable in every individual.

Question 99: Why do pimples appear during adolescence?

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Due to acne, a skin condition in which increased oily secretions from the skin during adolescence clog the skin pores and lead to infections, causing small reddish pimples, commonly on the face.

Question 100: What are secondary sexual characteristics? Give two examples.

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Changes that help distinguish males from females but are not directly involved in reproduction. Examples: growth of facial hair in boys; development of breasts in girls (also change in voice).

Question 101: Define puberty.

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Puberty is the stage in which the body of an adolescent undergoes external and internal changes to develop into an adult capable of reproduction; its onset is marked by secondary sexual characteristics.

Question 102: What is menstruation? How long may it last?

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The phase of the menstrual cycle when blood discharge occurs from the body is called menstruation. It may last for three to seven days.

Question 103: Why is the menstrual cycle considered a sign of good reproductive health?

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The menstrual cycle is an important natural process that recurs generally every 28–30 days (range 21–35 days) in healthy girls, and is one of the signs of good reproductive health.

Question 104: Mention any two emotional changes common in adolescents.

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Mood swings; strong emotions with increased sensitivity (feeling very energetic and happy on some days and low on others).

Question 105: State two positive ways to deal with mood swings during adolescence.

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Engage in varied activities like music, dance or sports; self-exploration and involvement in activities that may lead to creativity and innovation.

Question 106: Why is a nutritious diet important during adolescence? Name the nutrients needed.

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Since adolescence is a period of growth and development marked by several body changes, a nutritious diet is essential. Nutrients needed: proteins, carbohydrates, fats, vitamins and minerals (with adequate calcium and iron).

Question 107: Name two iron-rich foods and state the function of iron in our body.

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Spinach and kidney beans (also raisins, figs). Iron helps in the formation of blood.

Question 108: Name two calcium-rich food sources and state why calcium is important for adolescents.

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Milk and curd (also millets, cheese, paneer). Calcium helps in optimal bone growth during adolescence.

Question 109: What is the role of hormones in adolescence?

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Hormones are chemicals produced in our body that regulate various aspects of growth and development; many changes of adolescence, including menstruation and signs of puberty, are mainly due to hormones. Some hormones influence mood and behaviour.

Question 110: How should used sanitary pads be disposed of?

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They should be wrapped in newspaper and disposed of inside a dustbin, to ensure community health and environmental cleanliness.

Question 111: What is cyberbullying? What should a person do if bullied online?

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Cyberbullying is the use of digital devices such as phones or computers, or online platforms, to harass others by sending misleading messages, spreading false rumours, or sharing personal information without consent. One should not feel scared or helpless, but handle it wisely and seek help from parents and teachers.

Question 112: What is substance abuse?

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When people start consuming addictive substances, they develop a strong urge to take them again and again, and over time start using them regularly; this is called substance abuse.

Question 113: List any two health problems caused by harmful addictive substances.

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Breathing difficulties and memory loss (also damage to the lungs).

Question 114: What is the Nasha Mukt Bharat Abhiyaan? Which ministry launched it?

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It is an initiative by the Ministry of Social Justice and Empowerment, Government of India, to spread awareness about avoiding substance abuse, with a special focus on prevention among early-age children.

Question 115: Why should adolescents be cautious while using social media?

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Adolescents may use social media carelessly, knowingly or unknowingly. They should not share personal photos with strangers or share personal information, and should use these platforms responsibly for everyone's collective well-being.

Question 116: Describe any three physical changes that occur in boys during adolescence.

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Introduction: During adolescence, boys experience several noticeable physical changes as their bodies prepare for adulthood.
Key Points:
1. Change in voice — The voice box grows, leading to a hoarse voice; the growth appears as a bump called the Adam's apple.
2. Growth of facial hair — Boys develop facial hair, which later grows into a moustache and beard as they move towards adulthood.
3. Broadening of shoulders — Along with growing taller, boys gain weight, their shoulders become broader, and their chests become wider.
Conclusion: These physical changes in boys are natural signs of the body maturing towards adulthood during adolescence.

Question 117: Describe any three physical changes that occur in girls during adolescence.

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Introduction: During adolescence, girls experience several physical changes that mark the transition towards adulthood.
Key Points:
1. Development of breasts — Girls undergo body changes like the development of breasts as they mature during adolescence.
2. Increase in height and weight — Girls become taller and gain weight, with the increase in height becoming more prominent during adolescence.
3. Growth of body hair — Hair grows in body parts such as the armpits and the pubic region, similar to boys.
Conclusion: These physical changes in girls are natural signs of growth and development during the adolescent stage.

Question 118: What are secondary sexual characteristics? How do they differ from the changes that indicate reproductive capability?

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Introduction: Secondary sexual characteristics are features that distinguish males from females but are not directly involved in reproduction.
Key Points:
1. Definition — Secondary sexual characteristics are changes like voice change, facial and chest hair in boys, and breast development in girls.
2. Not involved in reproduction — These characteristics help distinguish males from females but are not directly involved in the reproductive process.
3. Reproductive capability changes — In contrast, internal changes like the maturation of reproductive organs and the onset of the menstrual cycle indicate reproductive capability.
Conclusion: Secondary sexual characteristics are external signs distinguishing the sexes, while reproductive capability is marked by internal maturation of reproductive organs.

Question 119: Explain the menstrual cycle and menstruation with the normal duration of each.

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Introduction: The menstrual cycle is a natural process in adolescent girls that indicates good reproductive health.
Key Points:
1. Menstrual cycle — The menstrual cycle recurs generally every 28–30 days, though healthy girls may have cycles ranging from 21–35 days.
2. Menstruation — The phase of the cycle when blood discharge occurs from the body is called menstruation, lasting three to seven days.
3. End of menstruation — Usually by the age of 45–55, menstruation stops naturally, marking the end of reproductive capability in a woman's life.
Conclusion: The menstrual cycle (28–30 days) and menstruation (3–7 days) are natural processes signifying good reproductive health in women.

Question 120: 'Myths about menstruation often lead to unnecessary fear, shame or guilt.' Explain this statement with an example.

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Introduction: Wrong beliefs about menstruation create myths and taboos that negatively affect girls and women.
Key Points:
1. Myths and taboos — Wrong beliefs about menstruation have given rise to myths and taboos, leading to unnecessary fear, shame, or guilt.
2. Example — physical isolation — Physical isolation of menstruating girls is unfortunately still quite prevalent in some societies.
3. No scientific basis — Menstruation is a natural process, and such myths have no scientific basis; a scientific outlook can promote good reproductive health.
Conclusion: Myths like isolating menstruating girls cause unnecessary shame and fear, and must be countered with scientific awareness.

Question 121: How do emotional changes affect the behaviour of adolescents? Explain with examples.

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Introduction: Adolescence is marked by stronger emotions than childhood, which can significantly influence behaviour.
Key Points:
1. Mood swings — Adolescents may feel very energetic and happy on some days and low on others, affecting their daily activities.
2. Strong emotions and sensitivity — Increased sensitivity can lead adolescents to engage in varied activities like music, dance, or sports.
3. Positive channelling — Strong emotions can inspire adolescents to join social initiatives supporting the needy, or develop deeper interest in new areas.
Conclusion: Emotional changes during adolescence affect behaviour in varied ways, and understanding them helps adolescents make better, thoughtful choices.

Question 122: Explain why a balanced diet is important during adolescence. What should it include?

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Introduction: Adolescence is a period of rapid growth and development, making a nutritious, balanced diet essential.
Key Points:
1. Growth requirement — Since the body undergoes several changes during adolescence, a balanced diet is of utmost importance for proper growth.
2. Essential nutrients — The diet should include proteins and carbohydrates for growth and energy, along with adequate fats, vitamins, and minerals.
3. Specific examples — Milk and millets provide calcium for bone growth; spinach and kidney beans provide iron for blood formation.
Conclusion: A balanced diet rich in proteins, carbohydrates, fats, vitamins, and minerals supports the rapid growth and development of adolescents.

Question 123: Describe the initiatives taken by the Government of India to support menstrual hygiene (any three).

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Introduction: The Government of India has introduced several initiatives to promote menstrual hygiene among girls and women.
Key Points:
1. Menstrual Hygiene Scheme (MHS) — Sanitary pads are provided free or at reduced prices to adolescent girls in rural areas, along with awareness programmes.
2. Rashtriya Kishor Swasthya Karyakram (RKSK) — This scheme aims to improve overall adolescent health, including menstrual hygiene, through peer education.
3. Suvidha Sanitary Napkin Initiative — Biodegradable sanitary pads are provided at affordable prices through Jan Aushadhi Kendras.
Conclusion: Government initiatives like MHS, RKSK, and Suvidha improve access to menstrual hygiene products and spread awareness among adolescent girls.

Question 124: What personal hygiene measures should adolescents follow? Why are they important?

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Introduction: Personal hygiene is crucially important during adolescence to maintain health and prevent infections.
Key Points:
1. Body hygiene — Maintaining cleanliness, particularly in the armpits and pubic region, protects against potential infections.
2. Menstrual hygiene — Girls should use sanitary pads or reusable cloth pads and maintain proper hygiene during menstruation for comfort and health.
3. Proper disposal — Used sanitary pads should be wrapped in newspaper and disposed of in a dustbin to ensure community health and environmental cleanliness.
Conclusion: Personal hygiene measures during adolescence are important because they protect against infections and maintain overall health and cleanliness.

Question 125: Why is it important to say 'NO' to addictive substances? What problems can they cause?

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Introduction: Addictive substances like tobacco, alcohol, and drugs are harmful and must be avoided completely during adolescence.
Key Points:
1. Addictive nature — Once consumed, these substances create a strong urge to take them again and again, leading to regular use (substance abuse).
2. Health problems — They cause serious health issues like breathing difficulties, memory loss, and damage to the lungs, depending on the substance.
3. Prevention is best — Saying 'NO' the first time and every time is important, as someone addicted today might have started with 'just one time'.
Conclusion: Saying 'NO' to addictive substances is essential to avoid addiction and serious physical and mental health problems.

Question 126: What steps can help a person overcome addiction? Explain.

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Introduction: Overcoming addiction requires support, guidance, and a firm commitment to healthy choices.
Key Points:
1. Seek support — The first step is seeking help and support from family and friends, and talking to trusted people like parents or teachers.
2. Counselling and medical advice — Professional counselling and medical advice can be very helpful in handling addiction situations.
3. Personal resolve — Remaining firm and confident in the decision to stay away from addictive substances is crucial for recovery.
Conclusion: With support from trusted people, counselling, and personal determination, a person can successfully overcome addiction.

Question 127: How do hormones control the changes of adolescence? Explain.

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Introduction: Hormones are the chemical messengers that primarily control the various changes occurring during adolescence.
Key Points:
1. What are hormones — Hormones are certain chemicals produced in our bodies that regulate growth and development.
2. Control mechanism — They are produced in different parts of the body and released at appropriate times in response to signals from the brain.
3. Role in adolescence — Many adolescent changes, including menstruation and other signs of puberty, are mainly due to hormones; some also influence mood and behaviour.
Conclusion: Hormones, released in response to brain signals, control the physical, emotional, and behavioural changes of adolescence.

Question 128: What are the dos and don'ts to be followed on social media? Mention any four.

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Introduction: Social media platforms should be used responsibly and thoughtfully for the collective well-being of all users.
Key Points:
1. Be respectful and kind — One should always be respectful and kind while interacting with others on social media platforms.
2. Think before posting — One should think carefully before posting any content, as it can affect others.
3. Protect privacy — Personal information should not be shared with strangers or virtual friends to stay safe online.
4. Seek guidance — Guidance from elders and teachers should be sought to use these platforms positively and avoid cyberbullying.
Conclusion: Following dos and don'ts like being respectful, thinking before posting, and protecting privacy ensures safe and positive social media use.

Question 129: Ramesh, an 11-year-old boy, developed a few pimples on his face. What could be the reason? What can he do to get relief?

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Introduction: Pimples on the face are a common occurrence during adolescence due to ongoing biological changes in the body.
Key Points:
1. Reason — oily skin — During adolescence, there is an increase in oily secretions from the skin, which can clog the skin pores.
2. Acne development — The clogged pores can lead to infections, causing acne — a condition in which small reddish pimples appear on the face.
3. Relief measures — Maintaining good personal hygiene, washing the face regularly, and seeking medical advice can provide relief from pimples.
Conclusion: Ramesh's pimples are caused by increased oily secretions during adolescence, and maintaining hygiene along with medical guidance can provide relief.

Question 130: Mary developed a bulge on her neck at age 11 and was given medication with an iodine-rich diet, while Manoj's neck bump at age 12 was called normal. Explain the difference.

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Introduction: The difference between Mary's and Manoj's neck bulges lies in their underlying causes — one medical, one natural.
Key Points:
1. Mary's bulge — iodine deficiency — Mary's bulge on the front of her neck was likely due to iodine deficiency affecting the thyroid, requiring medication and an iodine-rich diet.
2. Manoj's bump — Adam's apple — Manoj's bump was the Adam's apple, caused by the growth of the voice box (larynx) during adolescence in boys.
3. Different advice — The doctor treated Mary's condition medically, while Manoj's bump was confirmed as a normal part of growing up in boys.
Conclusion: Mary's bulge indicated a medical condition (iodine deficiency) needing treatment, whereas Manoj's bump was the natural Adam's apple of adolescence.

Question 131: Read the passage and answer the questions that follow. During the summer vacation, Venkatesh visited his grandparents. His 12-year-old cousin Devyani came running to greet him. She said, "Venkatesh, you have a thin moustache now! Your voice has also changed!" Venkatesh replied, "You have become so tall, Devyani!" (a) What is the age period of adolescence? (1) (b) Name the change that made Venkatesh's voice different. (1) (c) List the two changes mentioned in the passage and classify them as common to boys and girls or specific to one. (2)

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(a) Around 10–19 years. (b) Growth of the voice box (leading to a hoarse voice and the Adam's apple). (c) Growth of a moustache—specific to boys; increase in height—common to both boys and girls.

Question 132: Read the passage and answer the questions that follow. Twelve-year-old Aarav noticed small reddish pimples on his face. He was worried and stopped going to school. His science teacher explained that this is common during the teenage years and is caused by increased oily secretions from the skin. (a) Name the skin condition Aarav is suffering from. (1) (b) Why does this condition occur during adolescence? (1) (c) What is the difference between the condition and its manifestation? What should Aarav do? (2)

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(a) Acne. (b) Increased oily secretions from the skin during adolescence clog the skin pores and lead to infections. (c) Acne is a condition, while pimples are a manifestation of it. Aarav should understand it is a normal part of growing up, maintain personal hygiene, and not feel embarrassed.

Question 133: Read the passage and answer the questions that follow. Meera, a Class 7 student, noticed that her elder sister observes certain days every month when there is blood discharge. Her sister told her that this is a natural process that recurs generally every 28–30 days and is a sign of good reproductive health. She also said that it stops naturally by the age of 45–55. (a) What is this process called? What is the phase of blood discharge called? (1) (b) What is the normal duration of the discharge? (1) (c) What does this natural process indicate, and why should myths about it be rejected? (2)

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(a) The menstrual cycle; the phase of blood discharge is called menstruation. (b) It may last for three to seven days. (c) It indicates good reproductive health and that the body is preparing for adulthood. Myths like the physical isolation of menstruating girls have no scientific basis and cause unnecessary fear, shame and guilt; a scientific outlook should be encouraged.

Question 134: Read the passage and answer the questions that follow. A dietician visited a school and told students: "Adolescents need a balanced diet including proteins, carbohydrates, fats, vitamins and minerals. Spinach, kidney beans, raisins and figs help in the formation of blood, while milk, curd, cheese and paneer help in optimal bone growth." (a) Which mineral is present in spinach, kidney beans, raisins and figs? (1) (b) What is the role of calcium in adolescents? (1) (c) Why are adolescents, especially girls, advised iron-rich food? Name any two deficiency-related concerns. (2)

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(a) Iron. (b) Calcium helps in optimal bone growth. (c) Iron helps in the formation of blood; adolescents, especially girls, may suffer from blood-related health problems due to deficiency of iron or vitamin B. A balanced diet prevents these deficiencies.

Question 135: Read the passage and answer the questions that follow. Sita uses sanitary pads during menstruation. She wraps the used pad in newspaper and throws it in a dustbin. Her school has a vending machine for sanitary pads, and her teacher explained that the government provides sanitary pads free of cost or at a low price in rural areas through a special scheme. (a) Name one government scheme for menstrual hygiene in rural areas. (1) (b) Why are biodegradable sanitary pads better? (1) (c) Mention two initiatives (national or state level) for menstrual hygiene and what they aim to achieve. (2)

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(a) Menstrual Hygiene Scheme (MHS). (b) They are environment-friendly. (c) MHS—free/reduced-price pads and awareness programmes for rural adolescent girls; Suvidha Initiative—biodegradable pads at affordable prices through Jan Aushadhi Kendras; RKSK—overall adolescent health with peer education; 'Shuchi Scheme' (Karnataka) and free napkins in Tamil Nadu/Odisha (any two).

Question 136: Read the passage and answer the questions that follow. Ravi, a Class 8 student, started receiving mean messages and false rumours about himself from an unknown account on a gaming app. The person also threatened to share his photos publicly. Ravi felt scared but finally told his class teacher about it. (a) What is this act called? (1) (b) What should Ravi NOT do in this situation? (1) (c) Explain how Ravi handled the situation and why it was the right approach. (2)

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(a) Cyberbullying. (b) He should not feel scared or helpless, should not reply with rude messages, and should not share personal information/photos with strangers. (c) He sought help from a trusted elder/teacher—this is wise because parents and teachers can guide and protect him; one should be cautious when uploading pictures online or sharing personal information with strangers.

Question 137: Read the passage and answer the questions that follow. At a school assembly, a guest speaker said: "Some of your friends may tempt or pressure you to try tobacco, gutka, cigarettes, beedi, alcohol or even illegal drugs. Remember, these are addictive—someone who is addicted today might have started once with 'just one time'! Say NO the first time and every time." (a) What is the regular use of addictive substances called? (1) (b) Name any three harmful substances mentioned. (1) (c) List the health problems caused by such substances and state the first step to overcoming addiction. (2)

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(a) Substance abuse. (b) Tobacco, gutka, cigarettes/beedi, alcohol, illegal drugs (any three). (c) Health problems: breathing difficulties, memory loss, damage to the lungs. First step to overcoming addiction: seeking help and support from family and friends and talking to trusted people such as parents or teachers (counselling and medical advice also help).

Question 138: Read the passage and answer the questions that follow. Shalu told her friend, "Adolescence brings only physical changes, like growing taller or developing body hair." Her friend disagreed and explained that teenagers also experience new emotions—some days they feel very energetic and happy, while on other days they may feel low. (a) Was Shalu correct? Give reasons. (1) (b) Name the emotional change described by Shalu's friend. (1) (c) Suggest two ways for positive growth and development during this stage. (2)

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(a) No, adolescence brings not only physical changes but also emotional and behavioural changes. (b) Mood swings. (c) Engage in varied activities like music, dance or sports; get involved in activities that may lead to creativity and innovation; channel strong emotions into compassion and social work (any two).

Question 139: Read the passage and answer the questions that follow. Mary and Manoj were classmates. On turning 11, Mary developed a little bulge on the front of her neck. She visited the doctor, who gave her medication and asked her to take an iodine-rich diet. Similarly, a bump developed on the front of Manoj's neck when he turned 12. However, the doctor told him that it was a part of growing up. (a) What is the bump on Manoj's neck called? (1) (b) Why was Mary's bulge treated differently? (1) (c) Why does this bump develop in boys, and is it noticeable in everyone? What change does it cause in the voice? (2)

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(a) Adam's apple. (b) Mary's bulge was due to iodine deficiency and needed medication and an iodine-rich diet, whereas Manoj's bump was a normal part of growing up. (c) The bump is caused by the growth of the voice box during adolescence; it is not noticeable in every individual. It makes the voice of adolescent boys sound hoarse.

Question 140: Read the passage and answer the questions that follow. A survey found that many students in Class 7 spend 4–5 hours daily on social media. Some had shared personal photos with virtual friends, while others had joined groups that make fun of classmates. The school started a poster-making activity on responsible social media behaviour. (a) Why should personal photos not be shared with strangers? (1) (b) Name the activity of making fun of classmates online. (1) (c) List any four dos and don'ts of social media behaviour for adolescents. (2)

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(a) Strangers may misuse personal information/photos; one should be cautious when uploading pictures or sharing personal information with strangers. (b) Cyberbullying (making fun of others online). (c) Dos: be respectful and kind; think before posting; protect privacy; seek guidance from elders and teachers. Don'ts: don't share personal photos with strangers/virtual friends; don't share personal information; don't make fun of others; don't believe/spread rumours (any four).

Question 141: What is adolescence? Describe the changes that occur in boys and girls during this stage.

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Introduction: Adolescence is the period of rapid growth and development between childhood and adulthood, typically occurring between the ages of 10 and 19.
Key Points:
1. Definition — Adolescence is a stage of development between childhood and adulthood, beginning around 10 years and continuing up to 19 years of age.
2. Changes in boys — Boys grow taller and broader-shouldered, gain weight and strength, develop a hoarse voice (Adam's apple), and grow facial hair.
3. Changes in girls — Girls experience increase in height and weight, development of breasts, growth of hair in armpits and pubic region, and onset of menstruation.
4. Common changes — Both boys and girls may develop pimples (acne) due to increased oily skin secretions, and both experience emotional and behavioural changes.
5. Variation is normal — The timing, nature, and extent of these changes vary among individuals, and each person experiences adolescence at their own pace.
Conclusion: Adolescence is marked by significant physical, emotional, and behavioural changes in both boys and girls, preparing their bodies for adulthood.

Question 142: What are secondary sexual characteristics? Explain with examples. How are they related to puberty?

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Introduction: Secondary sexual characteristics are features that develop during adolescence and help distinguish males from females without being directly involved in reproduction.
Key Points:
1. Definition — Secondary sexual characteristics are features that help distinguish males from females but are not directly involved in the process of reproduction.
2. Examples in boys — Change (hoarsening) of voice due to the growing voice box (Adam's apple), and growth of facial and chest hair.
3. Examples in girls — Development of breasts is a secondary sexual characteristic in girls during adolescence.
4. Signs of puberty — These characteristics are natural signs that the body is preparing for adulthood, and they mark the onset of puberty.
5. Puberty defined — Puberty is the stage in which the body undergoes external and internal changes to develop into an adult capable of reproduction.
Conclusion: Secondary sexual characteristics like voice change, facial hair, and breast development are natural markers of puberty, indicating the body's preparation for adulthood.

Question 143: Explain the menstrual cycle. Why is it important, and how can menstrual hygiene be maintained?

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Introduction: The menstrual cycle is a natural process in adolescent girls that indicates good reproductive health and requires proper hygiene management.
Key Points:
1. The menstrual cycle — It recurs generally every 28–30 days (ranging 21–35 days in healthy girls) and is commonly known as 'the period'.
2. Menstruation phase — The phase of the cycle when blood discharge occurs from the body is called menstruation, lasting three to seven days.
3. Importance — The menstrual cycle is a natural process and one of the signs of good reproductive health; it begins at puberty and ends by age 45–55.
4. Hygiene maintenance — Girls can maintain hygiene using sanitary pads or reusable cloth pads designed for this purpose.
5. Proper disposal — Used pads should be wrapped in newspaper and disposed of in a dustbin; biodegradable pads are environment-friendly options.
Conclusion: The menstrual cycle is an important sign of reproductive health, and maintaining hygiene through proper products and disposal methods is essential for girls' comfort and health.

Question 144: Discuss the emotional and behavioural changes in adolescents. How can these be channelised positively?

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Introduction: Adolescence brings emotional and behavioural changes alongside physical ones, which can be directed towards positive growth with awareness.
Key Points:
1. Mood swings — Adolescents may feel energetic and happy on some days and low on others; engaging in music, dance, or sports helps.
2. Strong emotions — Emotions are stronger than in childhood, leading to increased sensitivity towards people and situations.
3. Positive channelling — Strong emotions can lead to compassion, involvement in social work, and supporting the needy and disadvantaged.
4. Self-exploration — Involvement in varied activities may lead to creativity and innovation during this stage of life.
5. Making better choices — Understanding how emotions influence behaviour and actions helps adolescents respond to situations thoughtfully.
Conclusion: Emotional and behavioural changes in adolescents can be channelised positively through creative activities, social work, and self-awareness.

Question 145: Describe the nutritional needs of adolescents with suitable examples of food sources.

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Introduction: Adolescence is a period of growth and development marked by several body changes, making a nutritious diet of utmost importance.
Key Points:
1. Proteins and carbohydrates — These are needed for proper growth, gaining strength, and performing well on the playground; sources include milk, paneer, and grains.
2. Calcium-rich foods — Milk, millets, curd, cheese, and paneer provide calcium for optimal bone growth during adolescence.
3. Iron-rich foods — Spinach, kidney beans, and dried fruits like raisins and figs provide iron for the formation of blood.
4. Vitamins and minerals — Adequate amounts of fats, vitamins, and minerals are also needed for overall growth and development.
5. Deficiency risks — Adolescents, especially girls, may suffer from blood-related problems due to iron or vitamin B12 deficiency; vitamin B12 must be obtained from food.
Conclusion: A balanced diet including proteins, carbohydrates, calcium, iron, and vitamins from varied food sources is essential for the healthy growth of adolescents.

Question 146: 'Proper guidance and awareness help adolescents manage changes effectively.' Justify this statement with examples from the chapter.

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Introduction: Proper guidance and awareness are key tools that help adolescents understand and manage the many changes they experience during this stage.
Key Points:
1. Understanding changes — Awareness that changes in height, voice, or hair are natural and vary among individuals helps adolescents accept them without anxiety.
2. Breaking myths — A scientific outlook towards menstruation helps remove fear, shame, and guilt caused by myths and taboos in society.
3. Nutritional guidance — Knowledge about balanced diets helps adolescents meet the nutritional demands of rapid growth during this period.
4. Avoiding harmful substances — Guidance from parents and teachers helps adolescents say 'NO' to addictive substances like tobacco and drugs.
5. Safe social media use — Seeking guidance from elders and teachers helps adolescents use social media responsibly and avoid cyberbullying.
Conclusion: With proper guidance and awareness, adolescents can manage physical, emotional, and behavioural changes effectively and build a strong foundation for life.

Question 147: What are hormones? Explain their role in adolescence with examples.

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Introduction: Hormones are chemicals produced in our bodies that play a crucial role in regulating growth and development during adolescence.
Key Points:
1. Definition — Hormones are certain chemicals produced in our bodies that regulate various aspects of growth and development.
2. Production and release — They are produced in different parts of the body and released at appropriate times in response to signals from the brain.
3. Role in puberty — Many changes in adolescence, including menstruation and other signs of puberty, are mainly due to hormones.
4. Influence on mood — Some hormones influence mood and behaviour, contributing to the emotional changes seen in adolescents.
5. Overall functioning — Hormones contribute to the proper functioning of the body, ensuring healthy growth during the adolescent years.
Conclusion: Hormones, released on brain signals, control the physical changes of puberty and also influence the mood and behaviour of adolescents.

Question 148: What is substance abuse? Why do adolescents fall prey to it, and how can it be prevented or overcome?

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Introduction: Substance abuse is the regular consumption of harmful, addictive substances, a risk that adolescents are particularly vulnerable to.
Key Points:
1. Substance abuse defined — When people start consuming addictive substances (tobacco, gutka, alcohol, drugs) and develop a strong urge to take them repeatedly, it becomes substance abuse.
2. Why adolescents are vulnerable — Adolescence is marked by curiosity and excitement; peers may tempt, persuade, or pressure adolescents to try these substances.
3. Health consequences — These substances cause breathing difficulties, memory loss, and lung damage, and harm both physical and mental health.
4. Prevention — Saying 'NO' the first time and every time, and remaining firm and confident in that decision, prevents addiction.
5. Overcoming addiction — Seeking support from family, friends, parents, or teachers, along with counselling and medical advice, helps overcome addiction; the National De-addiction Helpline (14446) also helps.
Conclusion: Adolescents fall prey to substance abuse due to curiosity and peer pressure, but firm refusal, support from trusted people, and counselling can prevent or overcome it.

Question 149: Describe the government initiatives to promote menstrual hygiene and adolescent health in India.

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Introduction: The Government of India has launched several initiatives to promote menstrual hygiene and the overall health of adolescents.
Key Points:
1. Menstrual Hygiene Scheme (MHS) — Sanitary pads are provided free or at reduced prices to adolescent girls in rural areas, along with awareness programmes on menstrual health.
2. Rashtriya Kishor Swasthya Karyakram (RKSK) — This programme aims to improve the overall health of adolescents, including menstrual hygiene, and encourages peer education.
3. Suvidha Initiative — Biodegradable sanitary pads are provided at affordable prices through Jan Aushadhi Kendras to improve access to hygiene products.
4. State-level schemes — States like Karnataka ('Shuchi Scheme'), Tamil Nadu, and Odisha run free sanitary napkin distribution programmes in government schools.
5. Nasha Mukt Bharat Abhiyaan — This campaign spreads awareness about avoiding substance abuse, with special focus on early-age children.
Conclusion: Through schemes like MHS, RKSK, Suvidha, and state initiatives, the government promotes menstrual hygiene and the overall well-being of adolescents in India.

Question 150: 'Adolescence can be made a joyful experience.' Explain any five ways mentioned in the chapter.

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Introduction: With good habits, thoughtful decisions, and small actions, adolescence can be made a joyful and positive experience.
Key Points:
1. Meeting nutritional needs — Eating a balanced diet rich in proteins, carbohydrates, calcium, iron, and vitamins supports growth and energy during this stage.
2. Personal hygiene — Maintaining body cleanliness, especially in armpits and the pubic region, protects from infections and builds confidence.
3. Physical activities — Regular exercise, games, and sports keep the body and mind fit, build stamina, and boost mood.
4. Balanced social life — Being polite and respectful towards others, and interacting thoughtfully in person and on social media, creates a safe environment.
5. Saying 'NO' to harmful substances — Completely avoiding addictive substances like tobacco, alcohol, and drugs keeps adolescents healthy and in control of their future.
Conclusion: By eating well, maintaining hygiene, staying active, balancing social life, and avoiding harmful substances, adolescents can make this stage joyful and healthy.

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