Question

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): The vestibule consists of utriculus and sacculus.
Reason (R): These structure contain macula consisting of hair cells and supporting cells.
In light of the above statements, choose the correct answer from the options given below.

• 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. Both (A) and (R) are false.

Hint:

Both statements are true, but the second only describes the contents and does not explain the first.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept
The membranous vestibule of the inner ear is concerned with balance.

Step 2: Check the Assertion
The vestibule consists of two sacs, the utriculus and the sacculus. So (A) is true.

Step 3: Check the Reason
Each sac has a sensory patch, the macula, made of hair cells and supporting cells. So (R) is true.

Step 4: Explanation test
The macula describes what the sacs contain. It does not explain why the vestibule is made of the two sacs.

Final Answer:
Both statements are true but the Reason does not explain the Assertion. \[ \boxed{\text{(B) }\text{Both (A) and (R) are true but (R) is NOT the correct explanation of (A).}} \]