A) Annelida
B) Mollusca
C) Coelenterata
D) Echinodermata
Correct Answer: D
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.
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