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What is the correct answer?
4
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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