Q.

Which of the following are radially symmetrical?

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a

Larvae of echinoderms

b

Larvae of annelids

c

Adult gastropods

d

Adult echinoderms

answer is D.

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Detailed Solution

Adults echinoderms are radially symmetrical (their larvae are bilaterally symmetrical). Adult gastropods are asymmetrical. Annelids are bilaterally symmetrical.

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