Given below are two statements: Statement I: Autoimmune disorder is a condition where the body defense mechanism recognizes its own cells as foreign bodies. Statement II: Rheumatoid arthritis is a condition where the body does not attack self cells. In the light of the above statements, choose the most appropriate answer from the options given below:
Answer: (C) Statement I is correct but Statement II is incorrect. Answer: (C) Statement I is correct but Statement II is incorrect Solution: Statement I is correct — in an auto-immune disorder the body's defence mechanism recognises its own (self) cells as foreign and attacks them.
- A.Both Statement I and Statement II are correct
- B.Both Statement I and Statement II are incorrect
- C.Statement I is correct but Statement II is incorrect✓
- D.Statement I is incorrect but Statement II is correct
Correct Answer
(C) Statement I is correct but Statement II is incorrect
Solution & Explanation
Answer: (C) Statement I is correct but Statement II is incorrect Solution: Statement I is correct — in an auto-immune disorder the body's defence mechanism recognises its own (self) cells as foreign and attacks them. Statement II is incorrect — rheumatoid arthritis is itself an auto-immune disease in which the body DOES attack self-cells, the opposite of what the statement claims. Why others are wrong: Both-correct (A) and both-incorrect (B) are ruled out because exactly one statement is true; D is reversed. NCERT Reference: NCERT Ch7, p.137, lines 31-34: "Rheumatoid arthritis which affects many people in our society is an auto-immune disease"