NEETZoologyHuman Health and Diseases
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Rheumatoid arthritis is considered an auto-immune disease. Reason (R): In rheumatoid arthritis, the body's immune system fails to recognize self-cells and produces antibodies that attack its own tissues. In the light of the above statements, choose the most appropriate answer from the options given
Options
- ABoth (A) and (R) are correct but (R) is not the correct explanation of (A).
- BBoth (A) and (R) are correct and (R) is the correct explanation of (A).
- C(A) is correct but (R) is not correct.
- D(A) is not correct but (R) is correct.
Correct answer
B. Both (A) and (R) are correct and (R) is the correct explanation of (A).
Step-by-step solution
Assertion (A) is correct because Rheumatoid arthritis is a well-known auto-immune disease. Reason (R) is correct and explains the Assertion. In certain conditions, due to genetic and other unknown reasons, the body loses the ability to distinguish self-cells from non-self. As a result, the immune system attacks self-cells and tissues, which is the exact mechanism of an auto-immune disease like Rheumatoid arthritis. Therefore, both (A) and (R) are correct and (R) is the correct explanation of (A). Answer: Both (A) a