Adolescence A Stage of Growth and Change Class 7 Extra Questions and Answers Science Chapter 6

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Class 7 Science Chapter 6 Adolescence A Stage of Growth and Change Extra Questions

Class 7 Science Chapter 6 Extra Questions on Adolescence A Stage of Growth and Change

Adolescence A Stage of Growth and Change Class 7 Very Short Question Answer

Question 1.
What is the term used for chemical secretions responsible for changes taking place in the body?
Answer
Hormones

Question 2.
What do understand by the term adolescence?
Answer:
Adolescence is the stage of development between childhood and adulthood which starts at the age of 10 years and continue upto 19 years of age.

Question 3.
What is menstruation?
Answer:
The phase of the menstrual cycle when blood discharge occurs from the female body is referred to as menstruation.

Question 4.
Name the disease caused by less or no secretion of thyroxine hormone by the thyroid.
Answer:
Goitre

Question 5.
How can we keep our bodies healthy?
Answer:
We can keep our bodies healthy by doing regular physical activities, eating nutritious food, and maintaining good personal hygiene.

Question 6.
What do you understand about a balanced diet?
Answer:
The food containing proteins, carbohydrates, fats and vitamins in requisite proportions is called a balanced diet.

Question 7.
What do you mean by personal hygiene?
Answer:
Personal hygiene means keeping our body clean by bathing daily, washing hands, brushing teeth, and wearing clean clothes.

Question 8.
What is cyberbullying?
Answer:
Cyberbullying is a form of bullying that takes place over digital devices, such as smartphones, computers, or social media platforms.

Question 9.
Name one emotional change seen during adolescence.
Answer:
Mood swings

Question 10.
What physical changes occur in girls during puberty?
Answer:
Breasts development and the onset of menstrual cycle.

Adolescence A Stage of Growth and Change Class 7 Short Question Answer

Question 1.
What is the function of iron? Name some iron- rich food items.
Answer:
Iron helps in the formation of haemoglobin in the blood, which carries oxygen to all parts of the body. Green leafy vegetables, jaggery, meat and citrus fruits are rich in iron.

Question 2.
Write notes on:
(a) Adam’s apple
(b) Secondary sexual characters
Answer:
(a) Adam’s apple: The protruding part of the throat in boys is called Adam’s apple. It is the enlarged voice box. It makes the voice of boys hoarse.
(b) Secondary sexual characters: The characters which help to distinguish males from females are called secondaiy sexual characters. These characteristics can be hair on the chest, face and underarms, the development of breasts in girls, beards and moustaches in boys.

Question 3.
Lila always eats only dal and rice in every meal. She often falls ill and has become prone to diseases. Can you suggest changes in her diet which can make her healthy and free from disease?
Answer:
A balanced diet includes adequate amount of proteins, carbohydrates, fats and vitamins to stay healthy. Lila’s diet is not a balanced diet as she takes only proteins and carbohydrates in every meal. She should include vitamins, and minerals in her meal to protect her from various diseases. She should take milk, fruits, nuts, cereals, pulses, and iron rich diet including leafy vegetables, jaggery, meat, and citrus fruits.

Question 4.
Mention any two features that are seen in boys and girls each to distinguish them from each other at puberty.
Answer:

• Two features seen in boys at puberty are:
  1. Growth of facial hairs
  2. Voice becomes hoarse.
• Two features seen in girls at puberty are:
  1. Development of breasts.
  2. The region below the waist becomes wider.

Question 5.
We should avoid taking medicines/drugs unless prescribed by a doctor. Give reasons.
Answer:
We should avoid taking medicines/drugs unless prescribed by a doctor because taking the wrong medicine can harm our body and cause side effects. Misusing drugs can lead to drug addiction, which can seriously affect our health.

Question 6.
Rahul and his classmates eat potato chips and burgers regularly after hainng their lunch during recess at school. Are they healthy eating habits? Give reasons.
Answer:
No, eating potato chips and burgers regularly is not a healthy habit as they are high in fat, sugar, and salt, but they lack the necessary nutrients needed for the body to stay healthy. Adolescents requires the consumption of a balanced diet containing an adequate proportion of nutrients like proteins, carbohydrates, fats, vitamins and minerals to stay healthy. Therefore, an adolescent person should take an adequate amount of nutrients in his/her diet.

Question 7.
List the changes in the body that take place at puberty.
Answer:
The changes in the body that take place at puberty are:

1. Sudden increase in height.
2. The bones of arms and legs elongate and make a person tall.
3. Growing of hair at different parts of the body.
4. The voice of a boy gets hoarse.
5. Development of sex organs.
6. Growth of moustaches and beards in the boys.
7. The breast in girls develops and the hips become wider whereas in boys shoulders generally, broaden.

Question 8.
What is the most important change which marks puberty?
Answer:
The human body undergoes several changes during adolescence. These changes mark the onset of puberty. The a most important change that marks puberty is that boys and girls become capable of reproduction.

Question 9.
What are the changes in the shape of the bodies of girls and boys during adolescence? Ans. During adolescence, boys and girls experience different-changes in body shape. In boys, the shoulders become broader and the chest becomes wider. In girls, menstruation starts and breasts develop as part of physical changes.

Question 10.
Explain the importance of emotional changes during adolescence.
Answer:
During adolescence, hormonal changes not only affect the body but also influence emotions. Adolescents may experience mood swings, confusion, anxiety, or a desire for independence. These emotional changes are natural but can be overwhelming. Importance of emotional changes:

1. They help in developing self-identity.
2. They prepare individuals for adult responsibilities.
3. They contribute to the development of reasoning and decision-making.

Adolescence A Stage of Growth and Change Class 7 Long Question Answer

Question 1.
Given below are certain food items required for the proper nourishment of adolescents. Name the nutrients present in the food items and write their functions.

Answer:

Question 2.
Salma had very soft and smooth skin during her childhood. As she entered adolescence, she developed pimples on her face. The skin specialist advised her to wash her face at regular intervals. Can you explain the reasons for the appearance of pimples on her face and suggest ways to prevent them?
Answer:
When Salma entered adolescence, she developed pimples on her face. This is because during adolescence, a girl’s or boy’s body goes through many changes. One of the main changes is an increase in hormones. These hormones cause the oil glands in the skin to produce more oil, which can clog the skin pores. When the pores get clogged, it can lead to infections, which cause acne.

Question 3.
During adolescence, the body of boys and girls undergoes certain changes. Given below are a few of those changes.
(a) Broad shoulders
(b) Wider chests
(c) Wider region below waist
(d) Development of muscles
(e) Development of mammary glands
(f) Growth of facial hair
(g) Acne and pimples on the face
(h) Development of sex organs
(i) High-pitched voice
(j) Growth of pubic hair
Categorise these changes into those that occur in boys and those that occur in girls and fill in the table given below.

Answer:

Question 4.
Why is maintaining personal hygiene important during adolescence? Give at least four reasons.
Answer:
Maintaining personal hygiene during adolescence is very important because:

1. Maintaining body hygiene, particularly in the armpits and the pubic region, protects us from many infections.
2. Girls need to manage menstrual hygiene to avoid bacterial infections.
3. Cleanliness helps prevent the spread of bacteria and skin problems.
4. Good hygiene helps boost self-confidence and mental well-being.
5. Regular bathing, wearing clean clothes, washing hands, and using sanitary products during menstruation are essential habits.

Adolescence A Stage of Growth and Change Class 7 Case-based Questions

1. The period of life, when the body of boys and girls undergo changes, leading to reproductive maturity, is called adolescence. In girls, adolescence may begin a year or two earlier than in boys.

The human body undergoes several changes during adolescence. These changes mark the onset of puberty. The most important change that marks puberty is that boys and girls become capable of reproduction. Puberty ends when an adolescent reaches reproductive maturity. The most conspicuous change during puberty is the sudden increase in height. In boys, the shoulders generally broaden as a result of growth. In girls, the region below the waist becomes wider. In boys, the muscles of the body grow more prominently than in girls. At puberty, the voice box begins to grow. Boys develop larger voice boxes. The growing voice box in boys can be seen as a protruding part of the throat called Adam’s apple. In girls, the voice box is hardly visible from the outside because of its small size. Generally, girls have a high- pitched voice, whereas boys have a deep voice.
(a) What is adolescence?
Answer:
The period of life, when the body changes, leading to reproductive maturity, is called adolescence.

(b) What is the most important change which marks puberty?
Answer:
The human body undergoes several changes during adolescence. These changes mark the onset of puberty. The most important change which marks puberty is that boys and girls become capable of reproduction.
OR
What changes occur in the voice of boys and girls during puberty?
Answer:
During puberty, the voice box in boys grows, which can make the voice sound hoarse. This growth may be seen as a bump in the throat, known as the Adam’s apple. In girls, the voice box also grows, but not as much as in boys. Girls generally have a higher-pitched voice.

2. Rahul was a bright and cheerful student in Grade 7. Recently, his friends started hanging out with an older group after school. One day, one of his friends offered him a cigarette and said, “Just try it once, it’s cool.” Rahul was confused. He remembered learning in class about how addictive substances like tobacco, alcohol, and drugs can harm the body. He politely refused and walked away. Later, he shared the incident with his parents and teacher.
(a) What kind of pressure was Rahul facing in this situation?
Answer:
Peer pressure

(b) Do you think Rahul did the right thing by refusing? Why?
Answer:
Yes, Rahul did the right thing by refusing because taking harmful substances can damage health and lead to addiction.

(c) Suggest one healthy way Rahul could respond to such peer pressure in the future?
Answer:
He could say “No, I do not want to harm my body,” or choose to walk away confidently.
OR
Define substance abuse?
Answer:
Substance abuse refers to the harmful or dangerous use of substances like alcohol, tobacco, and drugs for non-medical purposes. It can affect a person’s health, behaviour, relationships, and performance at school or work. Adolescents are especially vulnerable due to curiosity, peer pressure, and lack of awareness.

Adolescence A Stage of Growth and Change Class 7 Suggested Projects and Activities

1. Create a poster, brochure, or digital presentation illustrating the physical and emotional changes that occur in both boys and girls during adolescence. The project should include diagrams showing the development of secondary sexual characteristics, growth spurts, and hormonal changes. They can also include a section on psychological changes, like the development of self-identity and emotional fluctuations.

2. Students can create a balanced meal plan for adolescents based on their nutritional needs. The project can include detailed explanations of the vitamins, minerals, proteins, and carbohydrates that are important during this phase. Additionally, students can present the impact of poor diet choices on health, like the risks of junk food leading to issues like acne or obesity.

3. Create a poster or slogan to raise awareness about child marriage. Include relevant facts, images, and positive messages such as “Education is the key to freedom” or “Say No to Child Marriage.” Be sure to highlight the negative impact of child marriage on the health and well-being of young girls.

Class 7 Adolescence A Stage of Growth and Change Extra Questions for Practice

Question 1.
The period of maturity of reproductive organs is called
(a) Adolescence period
(b) Menstruation
(c) Gestation period
(d) None of these.

Question 2.
Which of these is a type of drug that is commonly abused?
(a) Water
(b) Alcohol
(c) Vitamin C tablets
(d) Protein shakes

Question 3.
Which of the following is a sign of drug addiction?
(a) Increased energy and happiness
(b) Withdrawal from family and friends
(c) Enjoying regular physical exercise
(d) Being more social and active

Question 5.
Read the given statements and select the correct option.
Assertion (A): Adolescents often experience mood swings.
Reason (R): Mood swings during adolescence are caused by hormonal changes in the body.
(a) Both A and R are true and R is the correct explanation of A.
(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) A is false but R is true

Question 6.
Match the items in Column I with those in Column II.

(a) (i)-(s), (ii)-(t), (iii)-(p), (iv)-(q), (v)-(r)
(b) (i)-(q), (ii)-(p), (iii)-(s), (iv)-(t), (v)-(r)
(c) (i)-(p), (ii)-(q), (iii)-(r), (iv)-(s), (v)-(t)
(d) (i)-(s), (ii)-(p), (iii)-(q), (iv)-(r), (v)-(t)

II. Very Short Answer Type Questions

Question 6.
What is the age of adolescence in humans?

Question 7.
Do all the parts of the body grow at the same rate?

Question 8.
What is the other name of the voice box in boys?

Question 9.
What are hormones?

Question 10.
What is puberty?

III. Short Answer Type-i Questions (2 marks each)

Question 11.
What happens if cleanliness is not maintained?

Question 12.
What do you understand by menstruation?

Question 13.
List the changes that occur in boys and girls during adolescence.

Question 14.
How does the voice change in boys during puberty?

Question 15.
How can stress affect adolescents?

IV. Short Answer Type-ii Questions (3 marks each)

Question 16.
What are the primary changes that occur in the body during adolescence?

Question 17.
Why is it important to have nutritious diet for adolescents?

Question 18.
What is the importance of physical activities during adolescence?

Question 19.
How can adolescents deal with peer pressure positively?

Question 20.
Why do adolescents experience increased sensitivity and emotional reactions?

V. Long Answer Type Questions (5 marks each)

Question 21.
Explain the changes in the body that take place at puberty age.

Question 22.
Why is maintaining personal hygiene important during adolescence? Give at least five reasons. .

Question 23.
How can adolescents deal with emotional changes in a healthy way?

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