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Q.

Complete double circulation occurs in all of the following animals, except

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a

cat

b

crow

c

camel

d

cobra

answer is A.

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Detailed Solution

Cobra is a reptile with three-chambered heart. Incomplete double circulation occurs in it.

Cat and camel are mammals with four-chambered heart and complete double circulation.

Crow belongs to Aves. It is with four-chambered heart and complete double circulation.

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