Read the passage and answer the question given below.
When a host is exposed to antigens, which may be in the form of living or dead microbes or other proteins, antibodies are produced in the host body. This type of immunity is called active immunity. Active immunity is slow and takes time to give its full effective response. Injecting the microbes deliberately during immunisation or infectious organisms gaining access into body during natural infection induce active immunity. When antibodies are directly given to protect the body against foreign agents, it is called passive immunity.
Production of antibodies against antigens in the body is:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Active immunity
Option (1) Innate immunity — Incorrect. Innate immunity is non-specific and present from birth; it does not involve making antibodies against a particular antigen.
Option (2) Passive immunity — Incorrect. In passive immunity antibodies are given from outside, not produced by the body.
Option (3) Active immunity — Correct. When a host is exposed to antigens and produces its own antibodies, it is active immunity. It is slow and takes time to give its full effective response, but it lasts long.
Option (4) Non-Specific immunity — Incorrect. Antibodies act against a particular antigen, so the immunity is specific.
Note: The passage is taken from NCERT. NTA has put lines of the NCERT text together to make it. Most CUET (UG) questions come straight from NCERT, so study the book line by line, including figures and their titles.