Given below are two statements. One is labelled Assertion (A) and the other is labelled Reason (R).
Assertion(A): Heart of Labeo is two-chambered.
Reason(R): Heart of Labeo pumps deoxygenated blood to the gills.
In light of the above statements, choose the correct answer from the options given below.

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Both (A) and (R) are true and (R) is the correct explanation of (A).

Both (A) and (R) are true but (R) is not the correct explanation of (A).

(A) is true but (R) is false.

Both (A) and (R) are false.

answer is B.

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Detailed Solution

Assertion (A): The heart of Labeo (a genus of fish) is indeed two-chambered. Fish belonging to the genus Labeo have a two-chambered heart consisting of one atrium and one ventricle.
Reason (R): The heart of Labeo does pump deoxygenated blood to the gills. In fish with two-chambered hearts, blood is pumped from the heart to the gills where it becomes oxygenated, and then it is distributed to the rest of the body. However, this reason alone does not explain why the heart of Labeo is two-chambered. The two-chambered structure of the heart is a characteristic feature of fish and is not specifically related to pumping deoxygenated blood to the gills.
Therefore, the correct answer is that Assertion (A) is true, and Reason (R) is true, but Reason (R) is not the correct explanation for Assertion (A).

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