WAEC Biology 1991 (August) Question 50

Question 50

Transport in Animals

Agglutination occurs in blood transfusion when the

  1. A.donor and the recipient belong to the same blood group
  2. B.same antibodies from donor and recipient fuse together
  3. C.donor and the recipient belong to different races
  4. D.recipient is not a universal recipient
  5. E.antigen and antibody in the donor and the recipient react
Show the answer and explanation

Answer: E (antigen and antibody in the donor and the recipient react)

Explanation

Clumping happens when the donor's antigens react with matching antibodies in the recipient's plasma.