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Assertion (A): At puberty, in boys, voic...

Assertion (A): At puberty, in boys, voice begins to crack and thick hair grows on face.
Reason ( R): At puberty, there is decreased secretion of testosterone in boys.

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 and R is true.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the Assertion (A) and the Reason (R) provided: ### Step 1: Analyze the Assertion (A) The assertion states: "At puberty, in boys, voice begins to crack and thick hair grows on face." - During puberty, boys undergo several physical changes due to hormonal changes. One of these changes includes the deepening of the voice, often referred to as "voice cracking," and the growth of facial hair. - Therefore, the assertion is **correct**. ### Step 2: Analyze the Reason (R) The reason states: "At puberty, there is decreased secretion of testosterone in boys." - Testosterone is a key hormone in males that is responsible for the development of secondary sexual characteristics, including voice deepening and facial hair growth. - During puberty, the secretion of testosterone actually **increases**, not decreases. This increase is what triggers the changes associated with puberty. - Therefore, the reason is **incorrect**. ### Step 3: Conclusion Based on the analysis: - The assertion is true, and the reason is false. - Thus, the correct answer is that the assertion is correct, but the reason is incorrect. ### Final Answer: Assertion (A) is correct, and Reason (R) is incorrect. ---
To solve the question, we need to analyze both the Assertion (A) and the Reason (R) provided: ### Step 1: Analyze the Assertion (A) The assertion states: "At puberty, in boys, voice begins to crack and thick hair grows on face." - During puberty, boys undergo several physical changes due to hormonal changes. One of these changes includes the deepening of the voice, often referred to as "voice cracking," and the growth of facial hair. - Therefore, the assertion is **correct**. ### Step 2: Analyze the Reason (R) ...
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