Which of the following type of circulation does rat have?

Closed circulation

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Double circulation

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Single circulation

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Both A and B

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Solution

The correct option is D Both A and B
Rat is a mammal. Mammals have closed and double circulation of blood.
A closed circulatory system is a type of circulatory system where the blood is pumped by the heart through a closed network of blood vessels.
In double circulatory system oxygenated and deoxygenated blood circulation occurs separately. It does not allow the intermixing of blood.
So the correct option is 'Both A and B'.

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