Question

It is much easier for a small animal to run uphill than for a large animal, because

(a) smaller animals have a higher metabolic rate

(b) small animals have a lower O2 requirement

(c) the efficiency of muscles in large animals is less than in the small animals

(d) it is easier to carry a small body weight

Answer 1

Correct option (a) smaller animals have a higher metabolic rate

Explanation:

Basal metabolic rate is inversely proportional to body size. So, smaller animals have a higher metabolic rate, thus have quick and more energy required to go up the hilIs.