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Mark the correct statement about the given organism.

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The body is divided into head, thorax and abdomen.

Parapodia helps in swimming.

Circulatory system is of closed type.

Proboscis gland helps in excretion.

answer is D.

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Detailed Solution

The worm-like marine organisms given in the picture is Balanoglossus. The body is cylindrical and is composed of an anterior proboscis, a collar and a long trunk. Circulatory system is of open type. Excretory organ is proboscis gland.

Head, thorax and abdomen are the body divisions of insects.

Closed circulation is the characteristic of Annelida (except leeches), Cephalopods of Mollusca and of Chordata (except tunicates).

Parapodia are lateral appendages observed in marine annelids like Nereis.

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