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NEETZoologyHuman Health and Diseases

Immunity Type Method of obtaining A. Natural active 1. From mother to foetus through placenta B. Artificial passive 2. Injection of antiserum C. Artificial active 3. Fighting infection D. Natural passive 4. Induced vaccination

Options

  1. AA-2;B-3;C-4;D-1
  2. BA-3;B-4;C-2;D-1
  3. CA-3;B-2;C-1;D-4
  4. DA-3;B-2;C-4;D-1

Correct answer

D. A-3;B-2;C-4;D-1

Step-by-step solution

Natural active immunity occurs when the body fights off an infection on its own, leading to long-term immunity. Artificial passive immunity is obtained by receiving an injection of antiserum or antibodies to provide immediate but temporary protection. Artificial active immunity is induced through vaccination, where the immune system is stimulated to produce a response against a pathogen. Natural passive immunity is transferred from mother to fetus through the placenta, providing the baby with temporary immunity.

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