Assertion :In molluscs, feather-like gills are present in mantle cavity. Reason: These gills have respiratory and excretory functions.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C
Assertion is correct but Reason is incorrect
D
Both Assertion and Reason are incorrect
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Solution
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In molluscs, the space between the mantle and the hump is called the mantle cavity in which feather-like gills are present. They have both respiratory and excretory functions.
So, the correct answer is 'B'.
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