First slide

Classification of Animals

Question

Select the correct set of examples of a given taxon.

Moderate

A

Cnidaria – Sea pen, sea fan, sea walnut
B

Chondrichthyes – Sawfish, dogfish, hagfish
C

Echinodermata – Sea cucumber, sea urchin, sea horse
D

Osteichthyes – Flying fish, angelfish, fighting fish

Solution

Flying fish (Exocoetus), angelfish (Pterophyllum) and fighting fish (Betta) are included under the class Osteichthyes. Sea walnuts (e.g. Pleurobrachia) are included under Ctenophora. Hagfish (Myxine) is a cyclostome. Sea horse (Hippocampus) is a bony fish.

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