CBSE Class 8 Science Chapter 7 Reaching The Age Of Adolescence MCQs

CBSE Class 8 Science Chapter 7 Reaching The Age Of Adolescence Multiple Choice Questions

Question 1. The most conspicuous visible change that occurs in boys during puberty is

1. Development in the voice box
2. Increase in height
3. Production of sperm
4. Increased sweating

Answer: Increase in height

Question 2. Pimples and acne are formed due to the increased activity of

1. Adrenal glands
2. Sebaceous glands
3. Thyroid gland
4. Sweat glands

Read And Learn More CBSE Class 8 Science Multiple Choice Questions

Choose the correct option

1. 1 and 2
2. 2 and 2
3. 1 and 3
4. 2 and 4

Answer: 2 and 4

CBSE Class 8 Science Chapter 7 Reaching The Age Of Adolescence MCQ with answers

Question 3. The dramatic changes in body features associated with puberty are mainly because of the secretions of

1. Thyroxine
2. Oestrogen
3. Adrenaline
4. Testosterone

Choose the correct Option 

1. (1) and (2)
2. (2) and (3)
3. (1) and (3)
4. (2) and (4)

Answer: 4. (2) and (4)

Question 4. The male hormone is

1. Oestrogen
2. Progesterone
3. Testosterone
4. All of these

Answer: 3. Testosterone

Question 5. How do the endocrine glands’ hormones secreted during puberty induce changes in the body?

1. It decreases the muscle mass
2. It reduces the metabolism, increasing the food intake
3. It stimulates changes in different parts of the body
4. It doubles the capability of body parts to function

Answer: 3. It stimulates changes in different parts of the body

Question 6. The beginning of menstruation at puberty is called

1. Ovulation
2. Menstruation
3. Menarche
4. Menopause

Answer: 3. Menarche

Question 7. Given below are events that lead to pregnancy and the development of the embryo.

1. Fertilisation of the egg
2. Maturation of the egg
3. Release of egg
4. Embedding of the embryo in the uterus

Which of the following options gives the correct order of sequence in which they occur?

1. (1). (2). (3), (4)
2. (2), (1), (3), (4)
3. (1), (4), (2), (3)
4. (2), (1) (3) (4)

Answer: (4). (2), (1). (4)

Question 8. Structures present in a cell which Is responsible for determining the sex of a baby are

1. Cytoplasm
2. Cell membrane
3. Nucleus
4. Chromosome

Answer: 4. Chromosome

Question 9. The number of chromosomes present in a human cell

1. 22 pairs
2. 23 pairs
3. 24 pairs
4. 26 pairs

Answer: 2. 23 pairs

Question 10. The belief that the mother is completely responsible for the sex of the child is wrong because the child

1. Gets sex chromosome only from the mother
2. Develops in the body of the mother
3. Gets one sex chromosome from the mother and the other from the father
4. Gets sex chromosome only from the father

Answer: 3. Gets one sex chromosome from the mother and the other from the father