First slide

Classification of Animals

Question

Statement I: The mouth of molluscs contains a file-like radula.
Statement II: Radula helps in chemical digestion.

Moderate

A

Statement I is incorrect, but statement II is correct
B

Statement I is correct, but statement II is incorrect
C

Both statement I and statement II are true
D

Both statement I and statement II are false

Solution

The mouth of molluscs (except bivalves) contains a file-like rasping organ called radula. It has minute teeth and is used for the scrapping of food and thus helps in mechanical digestion (but not chemical digestion).

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