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WAEC Biology 2001 Question 15

Question 15

Transport in Animals

Which of the following statements is true about blood groupings?

  1. A.Group AB can donate blood to all other groups.
  2. B.Group O are universal recipients.
  3. C.Group A has A antigen in its plasma.
  4. D.Group O has no antigen.
Show the answer and explanation

Answer: D (Group O has no antigen.)

Explanation

Group O red cells carry neither antigen A nor antigen B; AB is the universal recipient and antigens are on the red cells, not in the plasma.