First slide

Classification of Animals

Question

The adult ______ are radially symmetrical but larvae are bilaterally symmetrical.

Moderate

A

Asterias
B

Balanoglossus
C

Obelia
D

Ascaris

Solution

Adult Asterias (Echinodermata) is radially symmetrical, while its larval form is bilateral in symmetry.
Balanoglossus (Hemichordata), Obelia (Cnidaria), Ascaris (Aschelminthes) are bilaterally symmetrical both in larval and adult stages.

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