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Question

Bipinnaria is the larva of

A
Pila
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B
Lamellidens
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C
Sepia
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D
Asteroidea
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Solution

The correct option is D Asteroidea
A bipinnaria is the first stage in the larval development of most starfish. The bipinnaria is free-living, swimming as part of the zooplankton. Movement and feeding are accomplished by the bands of cilia. Eventually, three additional arms develop at the front end of the larva at this point it becomes a brachiolaria. Hence, option D is correct.

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