Reaching the Age of Adolescence MCQs
Reaching the Age of Adolescence – MCQs with Answers & Explanations
Class: CBSE Class 8
Subject: Science
Section: Reaching the Age of Adolescence
Topic: Reaching the Age of Adolescence MCQs
Board: CBSE Board Examination (Based on NCERT Syllabus)
Subject: Science
Section: Reaching the Age of Adolescence
Topic: Reaching the Age of Adolescence MCQs
Board: CBSE Board Examination (Based on NCERT Syllabus)
1. Adolescence is the period between:
Answer: B. Childhood & adulthood
Explanation: It is the transitional stage of growth and development.
Explanation: It is the transitional stage of growth and development.
2. Adolescence generally occurs between:
Answer: B. 11–19 years
Explanation: WHO defines adolescence roughly in this age group.
Explanation: WHO defines adolescence roughly in this age group.
3. Hormones are secreted by:
Answer: B. Endocrine glands
Explanation: They release hormones directly into blood.
Explanation: They release hormones directly into blood.
4. Male sex hormone:
Answer: B. Testosterone
Explanation: Controls male secondary sexual characters.
Explanation: Controls male secondary sexual characters.
5. Female sex hormone:
Answer: B. Estrogen
Explanation: Responsible for female sexual development.
Explanation: Responsible for female sexual development.
6. Sudden increase in height is called:
Answer: A. Growth spurt
Explanation: Rapid physical growth during adolescence.
Explanation: Rapid physical growth during adolescence.
7. Voice deepening occurs in:
Answer: B. Boys only
Explanation: Due to enlarged voice box (larynx).
Explanation: Due to enlarged voice box (larynx).
8. First menstrual flow is called:
Answer: B. Menarche
Explanation: Marks onset of reproductive maturity in girls.
Explanation: Marks onset of reproductive maturity in girls.
9. Hormone controlling growth:
Answer: B. Growth hormone
Explanation: Secreted by pituitary gland.
Explanation: Secreted by pituitary gland.
10. Adam’s apple is prominent in:
Answer: B. Boys
Explanation: Enlarged larynx causes projection.
Explanation: Enlarged larynx causes projection.
11. Reproductive maturity stage:
Answer: B. Adolescence
Explanation: Body becomes capable of reproduction.
Explanation: Body becomes capable of reproduction.
12. Endocrine gland in neck:
Answer: B. Thyroid
Explanation: Secretes thyroxine regulating metabolism.
Explanation: Secretes thyroxine regulating metabolism.
13. Balanced diet during adolescence helps in:
Answer: A. Proper growth
Explanation: Nutrients support rapid development.
Explanation: Nutrients support rapid development.
14. Iodine deficiency causes:
Answer: B. Goitre
Explanation: Thyroid gland enlarges.
Explanation: Thyroid gland enlarges.
15. Sweat & oil glands become active during:
Answer: B. Adolescence
Explanation: Causes acne and body odour.
Explanation: Causes acne and body odour.
16. Hormones travel through:
Answer: B. Blood
Explanation: They reach target organs via bloodstream.
Explanation: They reach target organs via bloodstream.
17. Pituitary gland is called:
Answer: A. Master gland
Explanation: Controls other endocrine glands.
Explanation: Controls other endocrine glands.
18. Mental changes during adolescence include:
Answer: A. Emotional changes
Explanation: Hormones influence behaviour.
Explanation: Hormones influence behaviour.
19. Secondary sexual characters appear during:
Answer: B. Adolescence
Explanation: Example: facial hair, breast development.
Explanation: Example: facial hair, breast development.
20. Healthy adolescence requires:
Answer: B. Exercise & diet
Explanation: Supports physical and mental growth.
Explanation: Supports physical and mental growth.
