Question

Passive immunity implies

• A. It is not developed directly in the individual
• B. It has to be transferred from immune to nonimmune individual
• C. It is not due to direct exposure to the pathogen by the individual
• D. None of the above

Answer 1

Answer: (A), (B)

The correct options are
A

It is not developed directly in the individual

B

It has to be transferred from immune to nonimmune individual

Direct exposure to the pathogen causes formation of immune cells in the individual which fights off the pathogen. But passive immunity as the name suggests, is not developed directly in the individual. It is provided by means of transferred antibodies from an individual who developed them on direct exposure to the pathogen to a nonimmune individual.