Question

Describe larval form of echinodermata

Answer 1

Echinoderms are deuterostomes and hence cleavage is radial, holoblastic and indeterminate. The larvae hatch in water and feed and grow through successive larval stages to become adults. The larvae of echinoderms are bilaterally symmetrical but lose symmetry during metamorphosis.

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Answer 2

Only difference in the larval and the adult form of Echinodermata is that the larval form has bilateral symmetry. The adult firm has radial symmetry . This type of metamorphosis in which the organism moves from advanced stage to a lesser advance stage is called retrogressive metamorphosis