Given below are two statements. One is labelled Assertion (A) and the other is labelled Reason (R).
Assertion (A) : In ABO blood grouping, 'O' group individuals are called ‘universal donors’
Reason (R): Individuals with blood type 'O' lack antibodies in their plasma.
In light of the above statements, choose the correct answer from the options given below.

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Both (A) and (R) are true and (R) is the correct explanation of (A).

Both (A) and (R) are true but (R) is not the correct explanation of (A).

(A) is true but (R) is false.

Both (A) and (R) are false.

answer is C.

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Detailed Solution

(A) is true but (R) is false.

The assertion that individuals with blood type 'O' are called "universal donors" is true because they can donate blood to individuals with any other blood type without causing an adverse immune reaction.

However, the reason given, that individuals with blood type 'O' lack antibodies in their plasma, is false. In fact, individuals with blood type 'O' have antibodies in their plasma, but these antibodies are against the A and B antigens present on the surface of red blood cells. This means that individuals with blood type 'O' can donate to individuals with other blood types because their blood lacks A and B antigens, not because they lack antibodies.

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