What is the correct answer?


Polyp phase is absent in

A. Hydra

B. Aurelia

C. Physalia

D. Obelia

Correct Answer :

B. Aurelia

Cnidarians exhibit two basic body forms called polyp and medusa. Polyp is a sessile and cylindrical form like Hydra, Adamsia, etc. whereas, the latter is umbrella-shaped and freeswimming like Aurelia or jelly-fish.

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