Identify the wrong statement with reference to immunity.
Answer: (A) Active immunity is quick and gives full response. Answer: (A) Active immunity is quick and gives full response Solution: This statement is WRONG.
- A.Active immunity is quick and gives full response✓
- B.Foetus receives some antibodies from mother, it is an example for passive immunity
- C.When exposed to antigen (living or dead) antibodies are produced in the host's body. It is called "Active immunity"
- D.When ready-made antibodies are directly given, it is called "Passive immunity"
Correct Answer
(A) Active immunity is quick and gives full response
Solution & Explanation
Answer: (A) Active immunity is quick and gives full response Solution: This statement is WRONG. According to NCERT, active immunity is slow and takes time to give its full effective response; it is not quick. The other three statements are correct: antibodies transferred from mother to foetus (and ready-made antibodies given directly) are passive immunity, while antibodies produced by the host on exposure to antigens (living or dead) constitute active immunity. Why others are wrong: Options B, C and D are all factually correct NCERT statements, so they are not the 'wrong' statement asked for. NCERT Reference: NCERT Ch7, p.136, lines 13-14: "Active immunity is slow and takes time to give its full effective response" (Answer per official/NCERT key.)