RBSE Class 7 Science Chapter 6 Solutions in English — Adolescence A Stage of Growth and Change

RBSE Class 7 Science Chapter 6 Question Answer Adolescence A Stage of Growth and Change

By tackling theseRBSE Solutions Class 7 Scienceand RBSE Class 7 Science Chapter 6 Adolescence A Stage of Growth and Change Question Answer, students will build a solid foundation in the topic.

Adolescence A Stage of Growth and Change Class 7 Question Answer

RBSE Class 7 Science Chapter 6 Adolescence A Stage of Growth and Change Question Answer

Class 7 Science Curiosity Chapter 6 Question Answer (Exercise)

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Question 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?
Answer:

1. Acne or pimples are a common physical change in adolescence and main reasons for this are:
2. Hormonal change : Androgen hormone increases in this age, which activates the oil glands (sebacious glands).
3. Additional oil production : These glands form more oil on skin.
4. Closed pores : Extra oil and dead cells blocked skin pores, which causes generation of bacteria and results in swelling, redness and acne.

(ii) What can he do to get some relief from these pimples?
Answer:

1. Remedies for relief : Ramesh can do these remedies
2. Cleaning of skin : Wash his face 2-3 times in day with face wash or mild soap.
3. Avoid oily products : Don’t use heavy cream or oil on face.
4. Do not squeeze pimples : It can cause infection and mark on face.
5. Balanced diet : Reduce oily and spicy food, eat fresh fruits and vegetables.
6. Consult a doctor : If pimples are in serious condition, then consult a dermatologist.

Question 2.
Which of the following food groups would be a better option for adolescents and why?

Answer:
The food group given in option (ii) is comparatively good for adolescents because this includes grains, pulses, leafy vegetables, dairy products, salads etc. The nutrients present in these food is helpful in growth and development. Protein is more needed in this age for physical growth and development of muscles. Protein helps to repair body, and formation of hormone and enzymes.

Question 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.
Answer:
Correct word : Menstruation

(ii) The hoarseness in the voice of adolescent boys is due to enlarged iceov xob.
Answer:
Correct word:Voice box

(iii) Secondary sexual characteristics are natural signs that the body is preparing for adulthood and mark the onset of urtypeb.
Answer:
Correct word : Puberty

(iv) We should say No to lahoclo and srugd as they are addictive.
Answer:
Correct words : Alcohol, drugs

Question 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?
Answer:
No, Shalu is not right completely because there are many changes in adolescence along with physical changes. So I would like to change or add that:

1. Mental changes : Development of thinking power, development of analytical thinking.
2. Emotional changes : Ups and downs in mental state (mood swings) increased sensitivity.
3. Social change : Change in relation with friends, understanding their role in society.
4. Biological changes : Secretion of hormone, menstruation in girls, sperm formation in boys.

Question 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.
(ii) If someone tries a harmful substance once, they can stop anytime they want.
Answer:
We would ask that:
(a) Can behavioural changes (like crankiness, anger, daring nature) affect life and relationships of adolescents negatively? Does neglecting these changes results in mental health problems (like stress, depression) in future? Will it helpful to understand these changes and discussing on them and to manage them properly?

(b) Do you know intoxicants changes the structure of body and chemical structure of mind which leads to addiction?Do you think that addiction can be stopped easily only with will power? Did you listen about a person ever, who started once and was needed long-term treatment to get rid of it?

Question 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?
Answer:
The behavioural changes in adolescents are:

1. Being self centred: Overthinking about the physical changes and their appearance.
2. Willing to become independent: Distance with parents and willing to take decision on their own basis.
3. Peer pressure: Affected by friends to do good or bad deeds.
4. Nature of daring: Attempting to do new and dangerous things.
5. Intensity of emotions: Very happy or very sad on something.

Question 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?
Answer:
The suggestions are:

1. Proper disposal of used pad: Wrap it in newspaper or other paper and throw in dustbin, not an open place.
2. Change it in a regular period: Pad should be changed within 4-6 hours to prevent infection.
3. Hygiene: Pay special attention on cleaning of hands and genital organs.
4. Selection of right product: Always use a good quality sanitary napkins or menstrual cups.
5. Speak without hesitation: Discuss on this topic with family and teachers to get rid of wrong assumptions.
6. Spread awareness: Inspire others to dispose in a right way.

Question 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?
Answer:
The possible reason for this is physical changes during adolescence.

1. Case of Manoj: The bulge appeared on Manoj’s neck was a common sign of development of voice- box (Adam’s Apple), which is a sexual characteristic in boys in adolescence. It is a natural change, so doctor ensured him.
2. Mary’s Case: Whereas bulge in neck of mary is may be a sign of hyperthyroidism, in which main reason is lack of iodine. So, doctor advised her to take iodised salt and medicines

Question 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 :

Answer:

Question 10.
Prepare a poster mentioning the tips for adolescents to live a healthy lifestyle.
Answer:
It is a creative question. Suggestions for poster are
Title of poster : “Adolescence-Foundation of healthy life.

Suggestion:

1. Balanced diet: Fresh fruits, vegetables, milk, pulses, and whole grain should included in meals.
2. Regular exercise: Sports, yoga or any physical activity for minimum 30 minutes.
3. Proper sleep: Essential to sleep for 8-9 hours.
4. proper hygiene: Don’t forget to take bath, brush teeth and wear clean clothes.
5. Stay away from intoxicants: Stay away from cigarette, alcohol and drugs. Learn to say “NO”.
6. Stay stress free: Take time out for hobbies along with your studies. Talk with friends and family. Right use of
7. Social media: Take care of online safety and decide a time limit.
8. Beware: Know about changes in your body and take guidance from doctor or your teacher.

Adolescence A Stage of Growth and Change Class 7 Questions and Answers (Intext)

(Page No. 75)

Question 1.
According to activity 6.1, what were the most commonly observable changes among students, as mentioned on the slips? List these
in Table.
Answer:

(Page No. 80)

Question 2.
Adolescents, especially girls, may sometimes suffer from blood-related health problem(s) because of a deficiency of iron or vitamin B12in the body. Find out such health problems.
Answer:
Fatigue, difficult’ in breathing, sensation in hands and legs, cracking of lips and heels, weak muscles, vertigoes, pale skin etc.

Question 3.
How can we manage iron deficiency in our body?
Answer:
For this, eggs, leafi’ vegetables, whole grains, beetroot and dry fruits can be eaten.

Question 4.
Find out about government schemes aimed to prevent such deficiencies.
Answer:
(i) Anemia free India
(ii) Rice fortification
(iii) Rashtriya Poshan Mission (Poshan Abhiyaan)
(iv) Pradhan Mantri Matra Vahdana Yojana
(v) Aanganvadi services

(Page No. 81)

Question 5.
Do you exercise regularly or participate in games and sports? What kinds of exercises do you do?
Answer:
Yes, we do exercise regularly and participate in games and sports. We do Surya Namaskar (Sun salutation), Tadasana (Mountain pose), Pranayama and skipping rope daily.

(Page No. 84)

Question 6.
Why these changes occur at this stage?
Answer:
The main reason behind these changes is chemicals named ‘hormones’ secreted by different glands. These are released in response to signals from brain on an appropriate time and controls growth and development.