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Q.

Which of the following have a closed circulatory system?

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a

Prawn and fish

b

Earthworm and whale

c

Crocodile and chiton

d

Snail and shark

answer is C.

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Detailed Solution

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Annelids (e.g., earthworm), cephalopod molluscs, cephalochordates and vertebrates (e.g., whale) have a closed circulatory system. The circulatory system is of open type in Arthropoda (prawns), Mollusca (snails and chitons).

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