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1. Cnidarians exhibit two basic body forms called polyp and medusa. 2. Polyp is a sessile and spherical form 3. Medusa is umbrella-shaped and free-swimming Regarding 1,2 and 3:

( a ) 3 is incorrect; 1 and 2 are correct
( b ) 1 is correct but 2 and 3 are incorrect
( c ) 2 is incorrect but 1 and 3 are correct
( d ) 1 is incorrect but 2 and 3 are correct
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(C) is the right answer.

Cnidarians exhibit two basic body forms called polyp and medusa. The former is a sessile and cylindrical form like Hydra, Adamsia, etc. whereas, the latter is umbrella-shaped and free-swimming like Aurelia or jelly fish.
answered Mar 20, 2014 by pady_1
 

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