Ncert Exercises & Solutions

Q. 40 Differentiate between active immunity and passive immunity.

Active lmmunity	Passive lmmunity
lt is developed or its antigen.	Lt is developed when ready-made Antibodies are injected into the body.
lt has no side effects.	Lt may cause a reaction.
Lt is slow but long lasting.	Lt is fast but lasts only for few days.
Lt takes time to devlop its response.	Lt is used when the immune response has to be faster.
e.g., vaccination for polio, etc	e.g., administration of tetanus antitoxins, etc.