Question
Which one of the following animals has two separate circulatory pathways?
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Frog
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Lizard
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Whale
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Shark
Solution
C.
Whale
The circulatory system in which two distinct and separate circulatory pathways for blood flow are involved, is called double circulatory system(also double-loop circulatory system). It occurs in mammals and birds whale is a mammal so it shows above characteristic.
