The adult animal in this phylum is radially symmetrical; but its larva exhibits bilateral symmetry :
A
Echinodermata
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B
Coelenterata
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C
Arthropoda
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D
Protozoa
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Solution
The correct option is D Echinodermata
Echinoderms are a phylum of marine animals. The adults are recognizable by their radial symmetry like starfish, sea urchins, sand dollars and sea cucumbers.
They have five arms which are also known as tube feet. The larva of the echinoderms, however, have bilateral symmetry.