Home / Question Bank / Biology / Breathing and Exchange of Gases / Question 9 NEET Biology Class 11 Disorders of the respiratory system Easy Single correct
Emphysema is a chronic respiratory disorder commonly caused by long-term cigarette smoking. Which of the following correctly describes what happens to the lungs in this disease and its immediate functional consequence? (A) The bronchi and bronchioles become inflamed, causing difficulty in breathing with wheezing (B) Fine dust particles accumulate in the lungs and stimulate fibrous tissue growth, reducing lung flexibility (C) The walls of the alveoli are damaged and adjacent alveoli merge, decreasing the total surface area available for gas exchange (D) The alveolar surface area increases as new alveoli are formed to compensate for reduced oxygen availability Show answer and explanation ← Question 8 All Breathing and Exchange of Gases questions Question 10 → More NEET Biology chapters © 2026 Lumi (Aikolumi Software Pvt Ltd). Original questions written by Lumi. Free to view and practise on this site. Copying, republishing or reproducing these questions, options or solutions, in print or online, is not permitted.
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