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

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 7. human health and disease1 Mark
MCQ
Antigen is a substance which
  • A
    lowers body temperature
  • B
    destroys harmful bacteria
  • ✓
    triggers the immune system
  • D
    is used as an antidote to poison
✓

Answer

Correct option: C.
triggers the immune system
c
Antigen is the only foreign substance which triggers immune system by way of antibody formation. These antibodies neutralize antigen by antigen-antibody reaction.

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