Which is not a larva of sponge?

Tornaria

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Parenchymula

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Stereogastrula

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Amphiblastula

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Solution

The correct option is B Tornaria
Parenchymula and Stereogastrula is the free living larva of the sponge like Lucosolenia. Amphiblastula is the larva of sycon.
Tornaria is the planktonic larva of Hemichordata. It is free swimming larva. Thus, the correct answer is option A.

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