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Fishes have a chambered heart

This question belongs to General Knowledge Biology
Biology
?

Fishes have a ________ chambered heart.

Answer & Solution
Correct Answer: Option D
Fish have a two-chambered heart with unidirectional circulation. Amphibians have a three-chambered heart, which has some mixing of the blood, and they have double circulation. Most non-avian reptiles have a three-chambered heart, but have little mixing of the blood; they have double circulation.
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