The animals with bilateral symmetry in young stage and radial pentamerous symmetry in the adult stage, belong to the phylum :

Mollusca

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Cnidaria

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Echinodermata

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Annelida

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Solution

The correct option is C Echinodermata
The larvae of echinoderms are bilaterally symmetrical. As they mature, they become radially symmetrical.

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The animals with bilateral symmetry in young stage and radial pentamerous symmetry in the adult stage, belong to the phylum :

The correct option is C EchinodermataThe larvae of echinoderms are bilaterally symmetrical. As they mature, they become radially symmetrical.

The correct option is C Echinodermata
The larvae of echinoderms are bilaterally symmetrical. As they mature, they become radially symmetrical.