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Breathing and Exchange of Gases — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYBreathing and Exchange of Gases1 Mark
MCQ
Asthma is a respiratory disease caused due to?
  • A
    Infection of trachea
  • B
    Infection of lungs
  • C
    Bleeding in pleural cavity
  • ✓
    Spasm in bronchial muscles
✓

Answer

Correct option: D.
Spasm in bronchial muscles

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