First slide

Classification of Animals

Question

Which of the following character is not related to phylum Mollusca?

Easy

A

Body is unsegmented with a distinct head.
B

Usually dioecious and oviparous.
C

Have an endoskeleton of calcareous ossicles.
D

Feather like gills are present in the space present between the visceral hump and the mantle.

Solution

Animals with an endoskeleton of calcareous ossicles are the members of the phylum Echinodermata. Body is unsegmented with a distinct head in Molluscans. Molluscans are usually dioecious and oviparous. In Mollusca, feather like gills are present in the space present between the visceral hump and the mantle.

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