Question

Resistance developed in an individual as a result of antigenic stimulus is

• A. Natural immunity
• B. Active acquired immunity
• C. Passive acquired immunity
• D. Artificial immunity

Answer 1

Answer: (B)

Active acquired immunity

• Acquired immunity is the immunity obtained either from the development of antibodies in response to exposure to an antigen, as from vaccination or an attack of an infectious disease or from the transmission of antibodies, as from mother to fetus through the placenta or the injection of antiserum.
  
• Active acquired immunity results from the development of antibodies in response to an antigenic stimulus, as from exposure to an infectious disease or through vaccination.
• Hence, resistance developed in an individual as a result of antigenic stimulus is due to Active acquired immunity.

So, the correct answer is 'Active acquired immunity'.