First slide

Classification of Animals

Question

Collar cells are found in animals that belong to the phylum

Easy

A

Ctenophora
B

Coelenterata
C

Porifera
D

Echinodermata

Solution

Collar cells (choanocytes) are found in sponges (Porifera). They line the spongocoel and some canal and help in the maintenance of water current through the canal system.

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