Question

Which of the following would increase the rate of heat exchange

between an animal and its environment?
a. feathers or fur
b. vasoconstriction
c. wind blowing across the body surface
d. countercurrent heat exchanger
e. blubber or fat layer

Answer 1

Wind blowing across the body surface.

Step-by-step explanation:

The adaptation helps the organism to survive in its environment and protect them from cold and excessive heat. The physiological, morphological and chemical changes are introduced in the organism for the adaptation.

Heat exchange helps in the conservation of energy in the organism. The wind that blows across the body surface increases the process of heat exchange. This helps the organism to save their energy and also allow them to conserve heat in their body.

Thus, the correct answer is option (c).

Answer 2

The correct answer is c. wind blowing across the body surface

Step-by-step explanation:

Blowing of winds across the body increase the rate of heat exchange because as the wind moves along the body surface it draws the heat from the surface which results in the cooling of the body.

Also when any animal sweat the blowing wind evaporated the sweat from the body surface and we know that evaporation cause cooling of the body.

Furs, blubber or fat layer, counter current heat exchange and vasoconstriction helps in saving the energy, therefore, they do not increase heat exchange rather they oppose heat exchange. Therefore the correct answer is c.