Heart of humans is .......... chambered.

One

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Two

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Three

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Four

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Solution

The correct option is D Four
Human beings belong to class Mammalia, they are warm blooded animals and their heart has four chambers two atrium and two ventricles, double circulation of blood takes place. Whereas fishes have two-chambered heart, amphibians and reptiles have three chambered heart. Thus, the correct answer is option D.

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