The animals with bilateral symmetry in young stage and radial pentamerous symmetry in the adult stage belong to the phylum:
Correct answer: D. Echinodermata
- A. Annelida
- B. Mollusca
- C. Cnidaria
- D. Echinodermata
Explanation
The animals belonging to phylum echinodermata, have developed bilateral symmetry, as is evident, from the study of structure of their larvae. However, the adult Echinoderms, have secondarily developed radial symmetry, due to their special mode of life.
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