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Read the following statements and choose the correct statements.
I. Water vascular system in Pila helps in locomotion.
II. Canal system in Sycon helps with food collection.
III. Eight internal rows of ciliated comb plates of Pleurobrachia help in locomotion.

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II only

II and III

I, II and III

I and II

answer is A.

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Detailed Solution

Water vascular system absent in molluscs (Pila). It is an unique feature of echinoderms.
Canal system in Sycon helps in food collection.
Eight external rows of ciliated comb plates of Pleurobrachia help in locomotion.

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