The echinoderms, hemichordates and chordates had which of the following larva as a common ancestral form?

Tornaria

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Trochophore

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Dipleurula

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Bipinnaria

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Solution

The correct option is C Dipleurula
Echinodermata, hemichordata and chordate have arisen from a common ancestral stock, probably the dipleurula larva.

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