---
title: "NCERT Solutions Class 7 Science Adolescence: A Stage of Growth and Change"
url: https://www.swavid.com/science/class/7/chapter/adolescence-a-stage-of-growth-and-change/ncert-solutions
dateModified: 2026-10-07T16:06:34+00:00
---

# NCERT Solutions Class 7 Science Adolescence: A Stage of Growth and Change

This chapter's questions cover concepts related to adolescence, physical and emotional changes during puberty, reproductive health, and personal hygiene. They also test understanding of nutrition, social behavior, and ways to avoid harmful substances.

Free PDF (7 pages): https://www.swavid.com/api/seo/pdf/ncert/science/class-7/swavid-ncert-solutions-class-7-science-chapter-6-adolescence-a-stage-of-growth-and-change-ae39deef60.pdf

## Let Us Enhance Our Learning

### Question 1

*3 marks · Short answer*

Ramesh, an 11-year-old boy, developed a few pimples on his face. His mother told him that this is because of ongoing biological changes in his body.
(i) What could be the possible reasons for the development of these pimples on his face?
(ii) What can he do to get some relief from these pimples?

**Part (i)**

1. During adolescence, there is an increase in oily secretions from the skin.
2. These secretions can clog the skin pores and lead to infections, resulting in pimples.

Answer (i): The increase in oily secretions from the skin during adolescence clogs pores and leads to infections.

**Part (ii)**

1. Maintaining good personal hygiene is essential.
2. Washing the face regularly helps in keeping the skin clean and reducing the risk of infections.

Answer (ii): He can maintain good personal hygiene by washing his face regularly.

**Answer:** The development of pimples is a common occurrence during adolescence.

> Common mistake: Students often forget to mention that the increase in oil is a natural part of the adolescent stage.

### Question 2

*3 marks · Short answer*

Which of the following food groups would be a better option for adolescents and why?

**Solution**

1. Adolescence is a period of rapid growth and development.
2. A balanced diet containing proteins, carbohydrates, fats, vitamins, and minerals is essential for proper growth, strength, and energy.
3. The food group that provides a variety of these nutrients is the better option for adolescents.

**Answer:** The food group providing a balanced diet is better because adolescents require adequate proteins, carbohydrates, fats, vitamins, and minerals for their rapid growth and development.

> Common mistake: Focusing only on one nutrient like protein instead of a balanced diet.

### Question 3

*2 marks · Very short answer*

Unscramble the underlined word in the following sentences:
(i) The discharge of blood in adolescent girls which generally occurs every 28–30 days is nstmnoiaretu.
(ii) The hoarseness in the voice of adolescent boys is due to enlarged iceov xob.
(iii) Secondary sexual characteristics are natural signs that the body is preparing for adulthood and mark the onset of urtypeb.
(iv) We should say NO to lahoclo and srugd as they are addictive.

**Part (i)**

1. The unscrambled word for nstmnoiaretu is menstruation.

Answer (i): menstruation

**Part (ii)**

1. The unscrambled word for iceov xob is voice box.

Answer (ii): voice box

**Part (iii)**

1. The unscrambled word for urtypeb is puberty.

Answer (iii): puberty

**Part (iv)**

1. The unscrambled words for lahoclo and srugd are alcohol and drugs.

Answer (iv): alcohol and drugs

**Answer:** The unscrambled words are: (i) menstruation, (ii) voice box, (iii) puberty, (iv) alcohol and drugs.

> Common mistake: Spelling errors in scientific terms.

### Question 4

*3 marks · Short answer*

Shalu told her friend, “Adolescence brings only physical changes, like growing taller or developing body hair.” Is she correct? What would you change in this description of adolescence?

**Solution**

1. Shalu is not entirely correct.
2. Adolescence is marked by significant physical, emotional, and behavioural changes, not just physical ones.
3. The description should be updated to include that adolescents also experience stronger emotions, increased sensitivity, and changes in behaviour.

**Answer:** Shalu is not correct; adolescence involves physical, emotional, and behavioural changes, such as mood swings and increased sensitivity.

> Common mistake: Ignoring the emotional and behavioural aspects of adolescence.

### Question 5

*3 marks · Short answer*

During a discussion in the class, some of the students raised the following points. What questions would you ask them to check the correctness of these points?
(i) Adolescents do not need to worry about behavioural changes.
(ii) If someone tries a harmful substance once, they can stop anytime they want.

**Part (i)**

1. How do these behavioural changes affect your daily life and relationships with others?

Answer (i): How do these behavioural changes affect your daily life and relationships with others?

**Part (ii)**

1. What are the risks of substance abuse and how does it negatively impact your physical and mental health?

Answer (ii): What are the risks of substance abuse and how does it negatively impact your physical and mental health?

**Answer:** Questions to check the correctness of these points are provided below.

> Common mistake: Asking questions that are not open-ended or reflective.

### Question 6

*3 marks · Short answer*

Adolescents sometimes experience mood swings. On some days, they feel very energetic and happy, while on other days, they may feel low. What other behavioural changes are associated with this age?

**Solution**

1. Adolescence is often marked by stronger emotions than childhood.
2. Other behavioural changes include increased sensitivity and a deeper interest in new areas.
3. Adolescents may also show interest in social initiatives to support the needy and disadvantaged.

**Answer:** Other behavioural changes include increased sensitivity, deeper interest in new areas, and a tendency to join social initiatives to support the needy.

> Common mistake: Listing physical changes instead of behavioural ones.

### Question 7

*5 marks · Long answer*

While using a toilet, Mohini noticed that used sanitary pads were scattered near the bin. She got upset and shared her feelings with her friends. They discussed the importance of menstrual hygiene and healthy sanitary habits. What menstrual hygiene and sanitary habits would you suggest to your friends?

**Solution**

1. Use sanitary pads or reusable cloth pads designed specifically for menstruation and change them regularly.
2. Maintain proper body hygiene by washing the pubic region and armpits to protect against potential infections.
3. Wrap used sanitary pads properly in newspaper before disposing of them inside a dustbin to ensure environmental cleanliness and community health.
4. Never scatter or litter used sanitary pads in toilets or open spaces.
5. Choose biodegradable sanitary pads when available as an environment-friendly option.

**Answer:** Menstrual hygiene involves using sanitary pads, changing them regularly, maintaining body hygiene, wrapping used pads in newspaper, and disposing of them properly in a dustbin.

> Common mistake: Disposing of used sanitary pads without wrapping them properly or throwing them out in the open.

### Question 8

*5 marks · Long answer*

Mary and Manoj were classmates and good friends. On turning 11, Mary developed a little bulge on the front of her neck. She visited the doctor who gave her medication and asked to take iodine-rich diet. Similarly, a bump was 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. According to you, what could be the possible reason for advising Mary and Manoj differently?

**Solution**

1. Mary's bulge on the front of her neck was due to a deficiency leading to goitre, which is why the doctor advised an iodine-rich diet and medication.
2. Manoj's bump on the front of his neck was the Adam's apple, which is an enlarged voice box that grows naturally in adolescent boys during puberty.
3. An Adam's apple is a normal physical change associated with the growth of the voice box and does not require medical treatment.
4. Therefore, Mary required medical care and iodine for a deficiency-related health issue, whereas Manoj was experiencing a normal developmental feature of adolescence.

**Answer:** Mary had a neck bulge due to a deficiency requiring an iodine-rich diet, while Manoj's bump was the Adam's apple, a normal growth of the voice box during adolescence.

> Common mistake: Confusing the neck swelling caused by iodine deficiency with the normal growth of the Adam's apple in boys.

### Question 9

*3 marks · Short answer*

During adolescence, the boys and girls undergo certain physical changes, a few of which are given below.
(i) Change in voice
(ii) Development of breasts
(iii) Growth of moustache
(iv) Growth of facial hair
(v) Pimples on the face
(vi) Growth of hair in the pubic region
(vii) Growth of hair in armpits
Categorise these changes in the table given below:

**Solution**

1. Observed only in boys: Growth of moustache (iii), Growth of facial hair (iv).
2. Observed only in girls: Development of breasts (ii).
3. Common in boys and girls: Change in voice (i), Pimples on the face (v), Growth of hair in the pubic region (vi), Growth of hair in armpits (vii).

**Answer:** The physical changes are categorised into those observed only in boys, only in girls, and common to both.

> Common mistake: Placing changes like voice change or hair growth in the wrong category.

### Question 10

*Activity*

Prepare a poster mentioning the tips for adolescents to live a healthy lifestyle.

**Solution**

1. Eat a nutritious and balanced diet including proteins, carbohydrates, fats, vitamins, minerals, and iron-rich foods.
2. Maintain good personal hygiene, especially in the armpits and pubic region, and practice proper menstrual hygiene.
3. Engage in regular physical exercises, games, and sports to build stamina and keep fit.
4. Say NO to addictive and harmful substances like tobacco, alcohol, and drugs.
5. Maintain positive social interactions, manage emotions thoughtfully, and seek guidance from elders and teachers when needed.

**Answer:** A healthy lifestyle poster should include tips on balanced nutrition, personal hygiene, regular exercise, avoiding harmful substances, and managing emotional and social life.

## Exploratory Projects

### Question 1

*Activity*

Find out about some personalities and organisations working in your locality to improve mental health of youth. Interview them. List at least five questions that you will ask in the interviews.

**Solution**

1. Contact local counselors, psychologists, or youth-focused mental health organizations in the locality.
2. Prepare a list of at least five meaningful questions focusing on adolescent emotional changes, stress management, and seeking help.
3. Conduct the interview, record the responses, and compile them to understand how to manage emotional challenges during adolescence.

**Answer:** An interview plan with five questions focused on adolescent mental health and emotional well-being.

### Question 2

*Activity*

Perform a role play on the theme 'Child marriage: A social evil', highlighting how it negatively impacts the overall well-being of children, particularly the health of young girls.

**Solution**

1. Form groups and assign roles such as family members, community members, and health experts.
2. Draft a short script depicting the social and legal consequences of child marriage, especially its harmful impact on the health and education of young girls.
3. Perform the role play to create awareness about child marriage as a social evil and promote child rights and well-being.

**Answer:** A role play performance highlighting the negative impacts of child marriage on the health and well-being of children.

### Question 3

*Activity*

21 June is celebrated as International Yoga Day. Organise a small camp with the help of your teachers and practise some asanas.

**Solution**

1. Coordinate with teachers and classmates to organize a yoga camp on 21 June (International Yoga Day).
2. Select simple and safe asanas that help in maintaining physical fitness, flexibility, and mental well-being.
3. Practice the asanas together under proper guidance to understand the importance of regular physical activity during adolescence.

**Answer:** Organization of a yoga camp and practice of asanas to promote physical and mental health.

## Frequently asked questions

### How many questions are there in NCERT Solutions for Class 7 Science Chapter 6 Adolescence A Stage of Growth and Change?

The chapter includes 10 questions in Let Us Enhance Our Learning and 3 questions in Exploratory Projects. You can find the free PDF and step-by-step solutions for all of them on this page only.

### Which topics are covered by the questions in this chapter?

The questions cover adolescent terminology, skin changes, behavioural shifts, physical changes, goitre versus Adam's apple, menstrual hygiene, proper disposal of sanitary pads, and nutritional needs. Additional exploratory projects cover mental health awareness, physical activities, yoga, fitness, and social awareness against child marriage.

### What are the different types of questions in these NCERT solutions?

The exercises feature a variety of question types including activities, very short answer, short answer, and long answer questions. SwaVid's free PDF and step-by-step solutions on this page help you practise all these formats effectively.

### Which question types are considered challenging and how should I approach them?

Long answer and exploratory project questions are often found to be the hardest as they require detailed explanations of biological processes or social themes. You should approach them by breaking down the concepts logically and relating them to real-life scenarios using the step-by-step solutions provided in our free PDF on this page.

### How should I write my answers to score full marks in Class 7 Science examinations?

To secure full marks, structure your answers clearly with appropriate scientific terminology and bullet points where necessary. Refer to the expert-crafted solutions in SwaVid's free PDF available exclusively on this page to understand the correct presentation style.

## Related pages

- [Class 7 Science chapters](https://www.swavid.com/science/class/7)

Solutions written by SwaVid, a personal AI tutor for Class 6 to 10 Maths and Science. Practise this chapter free: https://www.swavid.com/start/student