1.

The animal with bilateral symmetry in young stage and radial pentamerous symmetry in the adult stage belong to the phylumA. AnnelidaB. MolluscaC. CnidariaD. Echinodermata

Answer» Correct Answer - D
Echinoderms are triploblastic animals with organ system level of organisation . Lerval forms possess bilateral symmetry while adults have radial symmetry.


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