Question

Assertion. The valves of the heart ( e., semilunar and atrioventricular valves) prevent any
backward flow of blood
Reason: The valves in the heart allows the flow of blood only in one direction, i.e. from the atrja
to the ventricles and from ventricles to the pulmonary artery or aorta
(1) Both assertion and reason are true and the reason is the correct explanation of the
assertion
(2) Both assertion and reason are true but reason is not the correct explanation of the
assertion
(3) Assertion is true but reason is false
(4) Both assertion and reason are false​

Answer 1

Answer:

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

Answer 2

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