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STD 11 - 14. Breathing and exchange in gases — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 14. Breathing and exchange in gases1 Mark
MCQ
Emphysema is a chronic disorder which is caused due to
  • A
    Damaged trachea
  • B
    Damaged nostrils
  • ✓
    Damaged alveolar walls
  • D
    Damaged lungs
✓

Answer

Correct option: C.
Damaged alveolar walls
c
Emphysema is a chronic disorder in which the alveolar walls are damaged due to which the respiratory surface is decreased. One of the major causes of this condition is smoking

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