First slide

Classification of Animals

Question

Select the taxon that represent mostly marine and a few freshwater species.

Moderate

A

Porifera
B

Ctenophora
C

Echinodermata
D

Hemichordata

Solution

Sponges are mostly marine. A few (e.g., Spongilla) live in freshwater. Ctenophores, echinoderms and hemichordates are exclusively marine.

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