Question

Assertion: Smaller the organism, higher is the rate of metabolism per gram weight.

Reason: The heart rate of a six-month-old baby is much higher than that of an old person.

• 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

Answer 1

The correct option is B If both the assertion and reason are true but the reason is not a correct explanation of the assertion

B. Both the assertion and reason are true but the reason is not a correct explanation of the assertion.

Solution: The smaller the organism the higher is the BMR or basal metabolic rate per gram weight. The heart rate of six months is around 140 times per minute whereas in adults it is around 70 times a minute.

So the correct answer is "Both the assertion and reason are true but the reason is not a correct explanation of the assertion".