Question

IV. Assertion and reasoning:-
Assertion: After a physical exercise, heart pumps faster to supply oxygen rich blood.
Reason: Body needs a lot more oxygen rich blood after a physical exercise.
(i)Both A and B are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.​

Answer 1

Answer:

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