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.
If both Assertion and Reason are true and the reason is the correct explanation of the assertion
If both Assertion and Reason are true but the reason is not the correct explanation of the assertion
If Assertion is true statement but Reason is false
If both Assertion and Reason are false statements
C.
If Assertion is true statement but Reason is false
BMR or Basal Metabolic Rate is the rate at which body uses energy while at rest to maintain vital functions such as breathing and keeping warm. It can be determined by total body weight and the amount of muscle mass. It is inversely related with the weight/ volume of an organism, i.e. smaller the organism, higher is the basal metabolic rate and vice versa.
Heart rate of six month old baby is 110-112 beats/ min. Though, it is higher than normal adult person, but it is lower than the old person. At the age of 60, a man may have maximum heart rate of 160 beats/min (avg 120 beats/min.)
