Chapter Exam

Chapter-20 Reaching the Age of Adolescence — Online MCQ Test

Q: Which hormone is called the "master gland" hormone because it controls other endocrine glands during adolescence?

Answer: C. Pituitary hormone — The pituitary gland secretes hormones that control the activity of other endocrine glands. It plays an important role during adolescence.

Q: At what age does puberty usually begin in girls?

Answer: B. 8 to 13 years — Puberty generally starts earlier in girls than in boys, usually between 8 and 13 years.

Q: Which of the following changes is NOT commonly seen during puberty?

Answer: C. Complete disappearance of bones — Bones do not disappear during puberty. Growth in height, voice changes, and hair growth are normal changes.

Q: Which of the following is a correct comparison between boys and girls during puberty?

Answer: A. Girls usually begin puberty earlier than boys — Girls generally enter puberty earlier than boys, though the exact age can vary from person to person.

SCIENCE · Samacheer Kalvi 8th · Tamil Nadu State Board

Practice Chapter-20 Reaching the Age of Adolescence with a free chapter-wise online MCQ test for Tamil Nadu State Board Samacheer Kalvi 8th SCIENCE. This chapter covers: puberty hormones growth Covers physical emotional and hormonal changes during adolescence. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter-20 Reaching the Age of Adolescence — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board Samacheer Kalvi 8th SCIENCE — Chapter-20 Reaching the Age of Adolescence, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which hormone is called the "master gland" hormone because it controls other endocrine glands during adolescence?

A. Insulin
B. Growth hormone
C. Pituitary hormone ✓
D. Adrenaline

Answer: C. Pituitary hormone
The pituitary gland secretes hormones that control the activity of other endocrine glands. It plays an important role during adolescence.

At what age does puberty usually begin in girls?

A. 2 to 4 years
B. 8 to 13 years ✓
C. 18 to 20 years
D. 25 to 30 years

Answer: B. 8 to 13 years
Puberty generally starts earlier in girls than in boys, usually between 8 and 13 years.

Which of the following changes is NOT commonly seen during puberty?

A. Increase in height
B. Change in voice
C. Complete disappearance of bones ✓
D. Growth of hair in armpits and pubic region

Answer: C. Complete disappearance of bones
Bones do not disappear during puberty. Growth in height, voice changes, and hair growth are normal changes.

Which of the following is a correct comparison between boys and girls during puberty?

A. Girls usually begin puberty earlier than boys ✓
B. Boys always begin puberty earlier than girls
C. Both boys and girls begin puberty at exactly the same age
D. Puberty does not depend on age

Answer: A. Girls usually begin puberty earlier than boys
Girls generally enter puberty earlier than boys, though the exact age can vary from person to person.

Which option correctly matches the hormone with its main function during adolescence?

A. Testosterone — causes male secondary sexual characteristics ✓
B. Insulin — causes voice deepening
C. Oestrogen — controls blood sugar level
D. Adrenaline — starts menstruation

Answer: A. Testosterone — causes male secondary sexual characteristics
Testosterone is responsible for male secondary sexual characteristics such as facial hair and voice deepening.

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