In this article, you will find the answers and detailed solutions for the NCERT questions of class 7 science chapter 6 "Adolescense: A Stage of Growth and Change".
Adolescense: A Stage of Growth and Change - NCERT Solutions
Q1. Question: 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?
Answer: (i) During puberty, oil glands (sebaceous glands) become very active and produce more oil. This oil blocks the skin pores and causes pimples.
(ii) He should wash his face with mild soap and water regularly and should not touch or pop the pimples.
Q2. Question: Which of the following food groups would be a better option for adolescents and why?
(i) Junk food like burgers/chips or
(ii) A meal with chapati, dal, and vegetables.
Answer: Food group (ii) is better. It is a balanced diet that gives the body necessary proteins, vitamins, and minerals for growth. Junk food only has fats and is not good for health.
Q3. Question: Unscramble the underlined word in the following sentences:
(i) The discharge of blood in adolescent girls is nstmnoiaretu.
(ii) The hoarseness in the voice of adolescent boys is due to enlarged iceov xob.
(iii) Secondary sexual characteristics mark the onset of urtypeb.
(iv) We should say NO to lahoclo and srugd.
Answer:
(i) menstruation
(ii) voice box
(iii) puberty
(iv) alcohol and drugs
Q4. Question: Shalu told her friend, “Adolescence brings only physical changes.” Is she correct? What would you change in this description?
Answer: No, she is not correct. Adolescence also brings mental and emotional changes. A person starts thinking differently and becomes more self-aware.
Q5. Question: What questions would you ask 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.
Answer:
(i) "Are these changes a normal part of growing up, and how can we manage them?"
(ii) "Can even one-time use lead to a permanent habit or addiction?"
Q6. Question: Adolescents sometimes experience mood swings. What other behavioural changes are associated with this age?
Answer: Adolescents feel a need for independence, may feel more self-conscious, and spend more time thinking about their own identity and future.
Q7. Question: What menstrual hygiene and sanitary habits would you suggest to your friends?
Answer:
- Change sanitary pads every 4 to 6 hours.
- Dispose of used pads properly by wrapping them in paper.
- Maintain body cleanliness by washing daily.
Q8. Question: Mary (11) had a bulge on her neck and was told to take iodine. Manoj (12) also had a bump on his neck, but the doctor said it was normal. Why the difference?
Answer: Mary has Goiter, which is a disease caused by lack of iodine. Manoj’s bump is the Adam’s Apple, which is just the normal growth of the voice box in boys during puberty.
Q9. Question: Categorise these changes: (i) Voice change, (ii) Breast development, (iii) Moustache, (iv) Facial hair, (v) Pimples, (vi) Pubic hair, (vii) Armpit hair.
Answer:
Q10. Make a poster mentioning tips for adolescents for a healthy lifestyle.
Ans.
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| Image showing a poster mentioning tips for adolescents for a healthy lifestyle |