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JAMB Biology 2006 Question 39

Question 39

Evolution

A characteristic that best exemplifies the evolutionary advancement of mammals over other vertebrates is the

  1. A.viviparous mode of reproduction
  2. B.possession of paired limbs
  3. C.terrestrial mode of life
  4. D.possession of a heart
Show the answer and explanation

Answer: A (viviparous mode of reproduction)

Explanation

Most mammals give birth to live young that develop inside the mother and are fed through a placenta. Other vertebrates mostly lay eggs.