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JAMB Biology 2010 Question 9

Question 9

Adaptation

Use the diagram to answer: The main function of the feathers covering the part labelled I is to

Diagram for this question
  1. A.generate heat to keep the animal warm
  2. B.provide some power for flight
  3. C.serve as insulator to maintain body heat
  4. D.prevent ectoparasites from attacking the animal.
Show the answer and explanation

Answer: C (serve as insulator to maintain body heat)

Explanation

The feathers on the body trap a layer of air close to the skin. Air is a poor conductor of heat, so they keep body heat in. Feathers do not make heat themselves.