Assertion (A): Frogs have a three-chambered heart. Reason (R): This allows complete separation of oxygenated and deoxygenated blood. MCQ with Answer and Explanation

Question

Assertion (A): Frogs have a three-chambered heart.
Reason (R): This allows complete separation of oxygenated and deoxygenated blood.

A. Both A and R are true, and R is the correct explanation.

B. Both A and R are true, but R is not the correct explanation.

C. A is false, but R is true.

D. A is true, but R is false.

Answer: Option D

Solution (By JKSSB Mock Tests)

Amphibians have two atria and one ventricle; mixing of blood occurs because of the single ventricle. Complete separation is achieved only in four-chambered hearts. So A true, R false.

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Correct Answer: Option D

Explanation:
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Correct Answer: Option B

Explanation:
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Correct Answer: Option B

Explanation:
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