NEET UG BIOLOGY MCQ: ORGANISMS AND POPULATION

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Assertion (A) :Smaller the organism, higher is the rate of metabolism per gram weight

Reason (R) : The heart rate of six months old baby is much higher than that of an old person

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Correct option: A

If both Assertion and Reason are true and Reason is the correct explanation of Assertion

Option A is correct because smaller organisms have a higher surface area to volume ratio, leading to greater heat loss and thus a higher metabolic rate, and a baby's heart rate is higher than an old person's due to higher metabolic demands.

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