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Question

Tornaria is the larva of

A
Balanoglossus
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B
Herdmania
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C
Star fish
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D
Pila
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Solution

The correct option is A Balanoglossus
Tornaria is the planktonic larva of some species of Hemichordata. It is very similar in appearance to the bipinnaria larvae of starfishes, with convoluted bands of cilia running around the body.
Of the given options, Balanoglossus is hemichordate, while Herdmania is a urochordate.
So, the correct answer is option A.

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