First slide

Classification of Animals

Question

Sponges are characterised by the presence of

Easy

A

Water vascular system
B

Polyp and medusa stages
C

Canal system
D

Comb plates

Solution

Sponges are characterised by the presence of a canal system. Water vascular system is the characteristic feature of echinoderms. Polyp and medusa stages are found in the life history of cnidarians. Comb plates help for locomotion in ctenophores.

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