Which law states that endothermic animals from cold climates have smaller extremities or appendages than closely related species from warm climates?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Allen's rule.
Allen's Rule states that endothermic animals (those that regulate their body temperature internally), which live in colder climates, tend to have smaller extremities (like ears, tails, and limbs) compared to closely related species found in warmer climates. Smaller appendages reduce heat loss, helping animals conserve body heat in colder environments. Conversely, animals in warmer climates have larger appendages to facilitate heat dissipation and maintain a stable body temperature.