MHT CET · BIOLOGY · STD 12 - 10. Human Health and Diseases

Rohit has 'A' blood group. It indicates ________.

A presence of A antigen on the surface of RBCs.
B presence of A antigen in the plasma.
C a' antibodies on the surface of WBCs.
D a' antibodies in the serum.

Verified Solution

Answer & Solution

Correct Answer

(A) presence of A antigen on the surface of RBCs.

Step-by-step Solution

Detailed explanation

Person with blood group A has 'A' antigen on RBCs and Anti -b antibodies in the serum.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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