NCERT Class 7 Science Chapter 6 Adolescence: A Stage of Growth and Change Solutions to each chapter is provided in the list so that you can easily browse through different chapters NCERT Class 7 Science Chapter 6 Adolescence: A Stage of Growth and Change and select need one. NCERT Class 7 Science Chapter 6 Adolescence: A Stage of Growth and Change Question Answers Download PDF. NCERT Class 7 Science Solutions.
NCERT Class 7 Science Chapter 6 Adolescence: A Stage of Growth and Change
Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. CBSE Class 7 Science Solutions are part of All Subject Solutions. Here we have given NCERT Class 7 Science Solutions and Textbook for All Chapters, You can practice these here.
Adolescence: A Stage of Growth and Change
Chapter: 6
Page No- 75
Table 6.1: Most common changes during growing up
| S.No. | Changes | Your observations |
| 1 | Height | |
| 2 | Weight and strength | |
| 3 | Appearance | |
| 4 | …. |
Ans:
| S.No. | Changes | Your observations |
| 1 | Height | Increase in height due to rapid growth of bones. |
| 2 | Weight and strength | Increase in body weight and muscle strength. |
| 3 | Appearance | Development of facial features,growth of body hair. |
| 4 | Voice change / mood | Voice deepens ( especially in boys), mood swings occur. |
Page No – 78
Table 6.2: Emotional changes, their probable effects on behaviour, and ways for positive growth and development.
| Key emotional changes | Probable effects on behaviour | Ways for positive growth and development |
| Mood swings | Engage in varied activities like music, dance, or sports | Self-exploration and involvement in activities that may lead to creativity and innovation |
| Strong emotions | Increased sensitivity | Compassion, involvement in social work |
| Any other |
Ans:
| Key emotional changes | Probable effects on behaviour | Ways for positive growth and development |
| Mood swings | Engage in varied activities like music, dance, or sports | Self-exploration and involvement in activities that may lead to creativity and innovation |
| Strong emotions | Increased sensitivity | Compassion, involvement in social work |
| Anxiety or insecurity | Withdrawal , lack of confidence | Building self- esteem through counseling, supportive relationships , and skill building activities. |
Page No – 79
Table 6.3: Food sources, nutrients present in them, and functions of these nutrients.
| Food sources | Nutrients we get from them | Functions of these nutrients |
| Milk, millets, curd, cheese, and paneer | Calcium, proteins, fats _________ | To help optimal bone growth ___________ |
| ________________ | Proteins ,__________ | To help proper growth gain strength and improve levels of energy ________ |
| Spinach, kidney beans, and dried fruits like raisins, and figs | Iron, _________ | To help in the formation of blood |
Ans:
| Food sources | Nutrients we get from them | Functions of these nutrients |
| Milk, millets, curd, cheese, and paneer | Calcium, proteins, fats and Vitamin | To help optimal bone growth maintain teeth and muscle health |
| Pulses ,egg , meat , fish | Proteins , Vitamins | To help proper growth gain strength and improve levels of energy |
| Spinach, kidney beans, and dried fruits like raisins, and figs | Iron, Minerals | To help in the formation of blood |
Page No – 83
Table 6.4: Dos and don’ts to be followed on social media.
| Dos | Don’ts |
| Be respectful and kind. | Do not share personal photos with strangers/ virtual friends. |
| Think before posting. | _____________ |
| Protect privacy | _____________ |
Ans:
| Dos | Don’ts |
| Be respectful and kind. | Do not share personal photos with strangers/ virtual friends. |
| Think before posting. | Do not post anything hurtful, offensive, or inappropriate. |
| Protect privacy | Do not share passwords or sensitive information. |
| Let Us Enhance Our Learning |
1. 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?
Ans: Ramesh is 11 years old, and he is entering adolescence, a stage marked by various physical and hormonal changes in the body. A common occurrence during the adolescent years is a skin condition called acne, in which small, reddish pimples appear. These are commonly visible on the face. Acne occurs due to an increase in oily secretions from the skin during adolescence that can clog the skin pores and lead to infections.
(ii) What can he do to get some relief from these pimples?
Ans: To get relief from the pimples, Ramesh can follow a few simple steps. Regularly washing his face with a mild soap or acne cleanser will help remove excess oil and prevent clogged pores. It’s important for him not to touch, scratch, or pop the pimples, as this can lead to further irritation or scarring. Using non-comedogenic skincare products, which won’t clog pores, is another helpful step.
2. Which of the following food groups would be a better option for adolescents and why?
Ans: Image (ii) would be a better food option for adolescents because The plate in image (ii) represents a balanced and nutritious Indian meal, including:Vegetables, Lentils/dal, Chapati and rice,Curd/yogurt, Salad.
In contrast, image (i) shows junk food like burgers, fries, donuts, and pizza, which are:High in unhealthy fats, sugar, and salt and Low in essential nutrients.Can lead to obesity, poor concentration, and long-term health issues
3. 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.
Ans: The discharge of blood in adolescent girls which generally occurs every 28–30 days is Menstruation.
(ii) The hoarseness in the voice of adolescent boys is due to enlarged iceov xob.
Ans: The hoarseness in the voice of adolescent boys is due to enlarged Voice box.
(iii) Secondary sexual characteristics are natural signs that the body is preparing for adulthood and mark the onset of urtypeb.
Ans: Secondary sexual characteristics are natural signs that the body is preparing for adulthood and mark the onset of Puberty.
(iv) We should say NO to lahoclo and srugd as they are addictive.
Ans: We should say NO to Alcoholand drugs as they are addictive.
4. 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?
Ans: Shalu’s description of adolescence is partly correct, but it misses out on important aspects. While it’s true that physical changes like growing taller or developing body hair happen during this time, adolescence is much more than just physical transformation. It’s also a period of emotional and psychological changes.“Adolescence brings physical changes like growing taller or developing body hair, but it also includes emotional, psychological, and social changes. During this time, individuals develop a sense of identity, experience changes in their feelings and relationships, and become more independent.”
5. 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.
Ans: Questions to ask:
(a) Why do you think adolescents don’t need to worry about behavioural changes?
(b) What are some common behavioural changes that adolescents might experience?
(c) How can adolescents manage or understand these changes in a healthy way?
(ii) If someone tries a harmful substance once, they can stop anytime they want.
Ans: Questions to ask:
(a) What makes harmful substances addictive?
(b) Why do some people find it hard to stop using harmful substances even if they want to?
(c) What are the risks of developing an addiction or dependence on harmful substances?
6. 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?
Ans: Adolescents often experience a variety of behavioural changes as they grow, and mood swings are just one part of it. Along with feeling very happy and energetic on some days and low on others, they may also start seeking more independence and want to make their own decisions. This is also a time when they become more self-conscious and may worry a lot about how they look or what others think of them. They might start valuing their friends’ opinions more than their parents’, which can lead to peer pressure. Some adolescents may also become more private and less open about their thoughts and feelings. All of these changes are normal during adolescence and are part of the journey from childhood to adulthood.
7. 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?
Ans: If I were part of Mohini’s discussion, I would suggest the following menstrual hygiene and sanitary habits to ensure cleanliness, health, and respect for others:
(i) First, it’s important to change sanitary pads every 4 to 6 hours to avoid infections and maintain hygiene. Used pads should be wrapped properly in paper before disposing of them in a covered dustbin.
(ii) Second, one should always wash hands thoroughly with soap and water after changing pads to prevent the spread of germs. It’s also good to carry extra pads and tissues in a pouch, especially during school or travel, so that you’re always prepared.
(iii) Wash the external vaginal area with plain water during your regular bath or shower. Avoid using harsh soaps or vaginal washes, as these can disrupt the natural pH balance and lead to irritation or infections.
8. 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?
Ans: The reason Mary and Manoj were advised differently by the doctor is because the conditions they were experiencing, although they looked similar, had different causes. In Mary’s case, the bulge on her neck was likely due to a condition called goitre, which is caused by the deficiency of iodine.On the other hand, Manoj’s neck bump was most likely the enlargement of the voice box or larynx, which is a normal part of adolescence in boys. As boys grow, their voice box becomes bigger and more prominent, often seen as a bump in the throat called the Adam’s apple. This is a sign of puberty and does not require any treatment.
9. 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:
| Physical changes during adolescence | ||
| Observed only in boys | Observed only in girls | Common in boys and girls |
Ans:
| Physical changes during adolescence | ||
| Observed only in boys | Observed only in girls | Common in boys and girls |
| Change in voice | Development of breasts | Pimples on the face |
| Growth of moustache | Growth of hair in the pubic region | |
| Growth of facial hair | Growth of hair in armpits | |
10. Prepare a poster mentioning the tips for adolescents to live a healthy lifestyle.
Ans: Tips for adolescents to live a healthy lifestyle are:
(i) Eat Nutritious Food: Include fruits, vegetables, whole grains, milk, and protein-rich foods.
(ii) Exercise Daily: Engage in physical activities like walking, running, cycling, or playing sports.It keeps your body fit and mind fresh.
(iii) Drink Plenty of Water: Stay hydrated to help your body function well.
(iv) Maintain Personal Hygiene: Bathe daily, brush your teeth, and keep nails clean.Follow proper menstrual hygiene.
(v) Avoid Harmful Substances: Say NO to drugs, alcohol, and tobacco.
Hi! my Name is Parimal Roy. I have completed my Bachelor’s degree in Philosophy (B.A.) from Silapathar General College. Currently, I am working as an HR Manager at Dev Library. It is a website that provides study materials for students from Class 3 to 12, including SCERT and NCERT notes. It also offers resources for BA, B.Com, B.Sc, and Computer Science, along with postgraduate notes. Besides study materials, the website has novels, eBooks, health and finance articles, biographies, quotes, and more.
