Question Detail

ZOO 101 ZOO 101 Past Questions Objective Question

Question

According to Allen's Rule cited in the slides, populations living in cold climates tend to have:
Options
A Longer limbs to increase heat dissipation
B Shorter limbs to reduce heat loss
Correct Answer
C Darker skin pigmentation to absorb more UV
D Increased sweating rates for thermoregulation
Correct Answer

Option B is the correct answer.

Detailed Explanation

Allen's Rule states that endothermic animals in cold climates tend to have shorter limbs and appendages (ears, tails) to reduce surface area and minimize heat loss. Conversely, populations in warm climates have longer limbs to increase heat dissipation.

Hint

Shorter appendages help conserve body heat in cold environments.

Question Info