Read the assertion and reason carefully to mark the correct option out of the options given below:
(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
(b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
(c) If the assertion is true but the reason is false
(d) If both the assertion and reason are false
(e) If the assertion is false but reason is true
Assertion : Heart valves resemble swing doors in action
Reason : Valves are present in the heart chamber, at the opening of the heart into large arteries and veins.

Answer

B

Explanation

The valves present in heart when pushed by blood in the right direction , the flaps of the valve swing apart and allow the blood to flow through but when pushed in the passege through the valve. Thus these valves resemble swing doors in action. Hence the valves of the heart maintain unidirectional flow of blood and prevent it's regurgitation in the opposite direction.