NEET UG BIOLOGY MCQ: BODY FLUIDS AND CIRCULATION

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Assertion (A) The body has the ability to alter the stroke
volume and the heart rate
Reason (R) The metabolic needs of the body are met by
these changes, but the duration of cardiac cycle remains
same.

View answer and explanation

Correct option: C

If A is true, but R is false

Option C (If A is true, but R is false) is correct because while the body can alter stroke volume and heart rate, the duration of the cardiac cycle changes with heart rate.

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