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JAMB Biology 2004 Question 27

Question 27

Reproduction in Animals

The eggs of birds contain relatively larger quantities of yolk than those of amphibians and reptiles because

  1. A.birds are generally bigger in size
  2. B.embryonic development is longer in birds
  3. C.those of birds are fertilized internally
  4. D.birds lay shelled eggs
Show the answer and explanation

Answer: B (embryonic development is longer in birds)

Explanation

A bird embryo develops for a long time inside the egg until it hatches as a well-formed chick. It needs a large food store, the yolk, to last that long.