Read the following statements about Pila.
(a) A calcareous shell forms the exoskeleton.
(b) The body is divided into a proboscis, a collar and a trunk.
(c) The mouth contains a file-like radula useful for feeding.
(d) The circulatory system is of closed type.
Choose the correct answer from the options given below.

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(a) and (c) are correct

(b) and (c) are correct

(a), (b) and (c) are correct

(a), (c) and (d) are correct

answer is A.

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Detailed Solution

Pila (apple snail) is included under phylum Mollusca. It has a external shell (made up of calcium carbonate) and radula. The circulatory system is of open type.

The body is divided into proboscis, collar and trunk in hemichordates.

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