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Q.
The animal with bilateral symmetry in young stage and radial pentamerous symmetry in the adult stage belong to the phylum
Jharkhand CECEJharkhand CECE 2014
Solution:
Echinoderms are triploblastic animals with organ system level of organisation. Larvel form posses bilateral symmetry, while adult show radial symmetry. Annelids possess bilateral symmetry, e.g., Neries. Molluscs are bilaterally symmetrical animals excepts snails (asymmetrical) coelenterates are radially symmetrical animals.