Sawaal
7
Q:

The grouping of blood is based on substances called 

A) antibodies B) antigens
C) antitoxin D) enzymes

Answer:   B) antigens



Explanation:

The red blood corpuscles  or erythrocytes usually carry antigens and there are two types of antigens. The A group persons have antigen A in their red corpuscles and the B group have antigen B in their red corpuscles. The AB group person have both antigen A and antigen B in their erythrocytes. The 'O' group persons have no antigens in their red corpuscles.

Subject: Biology
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