Which of the following have a closed circulatory system?
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a
Prawn and fish
b
Snail and shark
c
Earthworm and whale
d
Crocodile and chiton
answer is C.
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Detailed Solution
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 prawns (Arthropoda), snails and chitons (Mollusca).