1.

Canal system is a characteristic of [BHU 1982, 85, 2000, 02; CPMT  1996; CBSE PMT 1999, RPMT 1999]

A.            Hydra                                       
B.            Sponge
C.            Sea anemone                          
D.            Sea urchin
Answer» C.            Sea anemone                          


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