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Q.

Select the correct statements about mollusca?                                 

A) Nervous system consists of ganglia, commissures and connectives.

B) Sense organs include eyes, tentacles and osphradium

C) Osphradium tests the purity of water

D) Osphradium is absent in bivalves and gastropods.

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a

A, C and D

b

A, B and D

c

A, B and C

d

B, C and D

answer is D.

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Detailed Solution

Osphradium is present in only cephalopoda

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