Identify the correct statement.
(a) The smaller animals have larger surface area relative to their volume.
(b) Smaller animals are rarely fund in polar region.
(c) Bear cannot migrate hence hibernate during winter.

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(a) and (c) only

(a), (b) and (c)

(b) and (c) only

(a) and (b) only

answer is D.

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Detailed Solution

Small animals have a large surface area relative to their volume. They tend to lose body heat very fast when it is cold outside; then they have to spend much energy to generate body heat through metabolism. This is the main reason why very small animals are rarely found in polar regions. Hibernation is a time when animals ‘sleep’ through cold weather. The familiar case of bears going into hibernation during winter is an example of escape in time.

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