Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): A person with blood group O is supposed to be an universal donor.
Reason (R): Group O does not contain any antigens.
In the light of the above statements, choose the correct answer from the options given below:
Assertion (A): A person with blood group O is supposed to be an universal donor.
Reason (R): Group O does not contain any antigens.
In the light of the above statements, choose the correct answer from the options given below:
- Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A)
- Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A)
- Assertion (A) is true, but Reason (R) is false.
- Assertion (A) is false, but Reason (R) is true
The Correct Option is C
Solution and Explanation
To address this question, we must evaluate the given Assertion (A) and Reason (R), and determine the relationship between them regarding the concept of a universal blood donor.
Assertion (A):
A person with blood group O is supposed to be a universal donor.
This statement is true. Individuals with blood type O negative (O-) are considered universal donors because their red blood cells lack A and B antigens on their surface. This means that their blood can be transfused to any patient with any ABO blood type without causing an immune reaction.
Reason (R):
Group O does not contain any antigens.
This statement is false. Blood group O does not have A or B antigens on the red blood cells, but individuals with blood group O have H antigens, which are present on the surface of the red blood cells. Moreover, blood type O negative is specifically regarded as the universal donor because it lacks the Rh antigen as well.
Conclusion:
Therefore, while the Assertion (A) that blood group O is a universal donor is true, the Reason (R) provided is incorrect because it inaccurately states that group O does not contain any antigens at all. Hence, the correct answer is: Assertion (A) is true, but Reason (R) is false.
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