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NEET Zoology Body Fluids and Circulation 2026 NEET 2026 (Cancelled)

NEET Zoology Question (2026) — Solution

Question

Select the incorrect statements with reference to Rh grouping : A. Erythroblastosis foetalis is a condition observed having foetus with Rh^ -ve blood and mother with Rh^ +ve blood. B. Rh antigen is observed on RBCs in the majority of human beings. C. Before blood transfusion, Rh group should also be matched. D. Rh incompatibility is observed when a pregnant mother is Rh^ -ve and the foetus is Rh^ +ve . E. Erythroblastosis foetalis can be avoided by administering anti-Rh antibodies to the mother immediately after the delivery of the second child. Choose the answer from the options given below :

Options

  1. A. C and D only
  2. B. A and B only
  3. C. A and E only
  4. D. B and C only

Answer

C. A and E only

Step-by-step solution

Statement A is incorrect because erythroblastosis foetalis occurs when a pregnant mother is Rh^ -ve and the foetus is Rh^ +ve . Statement B is correct as nearly 80\% of humans have the Rh antigen on the surface of their RBCs. Statement C is correct because Rh compatibility must be checked before blood transfusion to prevent immune reactions. Statement D is correct as Rh incompatibility arises when an Rh^ -ve mother carries an Rh^ +ve foetus. Statement E is incorrect because erythroblastosis foetalis is prevented by administering anti-Rh antibodies to the Rh^ -ve mother immediately after the delivery of her first Rh^ +ve child, not the second child. Thus, statements A and E are incorrect. Answer: A and E only

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