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STD 12 - 7. human health and disease — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 7. human health and disease1 Mark
MCQ
Acquired Immunity mediated by which of the following
  • A
    Antibody formation by $T$ - lymphocytes
  • ✓
    Antibody formation by $B$ - lymphocytes
  • C
    $HCl$ by stomach
  • D
    Bite by snake
✓

Answer

Correct option: B.
Antibody formation by $B$ - lymphocytes
b
The individual gains acquired immunity after exposure to an infection or in response to a particular vaccine. As a result, in case of recurrent infection, the $B$ - cells of immune system makes antibodies against the causative agent.

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