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JAMB Biology 1992 Question 26

Question 26

Reproduction in Animals

In mammalian development, the function of the yolk is to

  1. A.supply nutrients to the embryo
  2. B.act as the shock-absorber to the foetus
  3. C.supply air to the embryo
  4. D.facilitate the process of excretion in the foetus.
Show the answer and explanation

Answer: A (supply nutrients to the embryo)

Explanation

Yolk is stored food; it nourishes the early embryo before the placenta takes over.