Multiple choice

What is Allen’s rule?

  1. Birds of colder regions tend to have narrower wings than those of warmer regions.

  2. Fish found in cold waters tend to have more vertebrae than those found in warm waters.

  3. Mammals, birds and insects found in tropical regions are darker in colour than those found in arctic regions.

  4. Mammals and birds of colder regions are larger in size than those of warmer regions.

  5. Mammals living in cold regions tend to have shorter ears and limbs than those found in warm areas.
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E Correct answer
Explanation

Mammals living in cold regions tend to have shorter ears and limbs than those found in warm areas. This is known as Allen’s rule.

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