Assertion: Walls of ventricles are thicker than the atria.

Reason: This helps in preventing the backflow of the blood.

If both assertion and reason are true then the reason is not the correct explanation of assertion

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If both assertion and reason are true and the reason is the correct explanation of assertion.

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Solution

The correct option is A If both assertion and reason are true then the reason is not the correct explanation of assertion
Correct option: (B) If both assertion and reason are true then the reason is not the correct explanation of assertion.

The ventricles have thicker walls than atria because ventricles supply oxygenated blood to body tissues that require pressure.

The valves are present that prevent the backflow of blood.

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Similar questions

What prevents the backflow of blood inside the heart during contraction ?
(a) thick muscular walls of ventricles
(b) valves
(c) thin walls of atria
(d) all of the above

Q. Assertion: Walls of the ventricles are generally thicker than that of the atria.
Reason: Ventricles pump blood to different organs with high pressure.

Assertion(A): Walls of the ventricles are generally thicker than that of the atria.

Reason(R): Ventricles pump blood to different organs with high pressure.

Q. The walls of ventricles are much thicker than atria. Explain

Question 18
What prevents backflow of blood inside the heart during contraction?

(a) Valves in heart
(b) Thick muscular walls of ventricles
(c) Thin walls of atria
(d) All of the above

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Assertion: Walls of ventricles are thicker than the atria.​ Reason: This helps in preventing the backflow of the blood.​

Assertion: Walls of ventricles are thicker than the atria.

Reason: This helps in preventing the backflow of the blood.