Question

Assertion : In molluscs, feather-like gills are present in mantle cavity.
Reason : These gills have respiratory and excretory functions.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (B)

In molluscs, the space between the mantle and the hump is called mantle cavity in which feather-like gills are present. They have both respiratory and excretory functions.