Due to increasing air-borne allergens and pollutants, many …

Biology Breathing and Exchange of Gases Previous Year Questions Single Correct MCQ

Published on: August 21, 2026

Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to

Benign growth on mucous lining of nasal cavity.

Inflammation of bronchi and bronchioles.

Proliferation of fibrous tissues and damage of the alveolar walls.

Reduction in the secretion of surfactants by pneumocytes.

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The correct answer is:

Inflammation of bronchi and bronchioles is due to increasing air-borne allergens and pollutants that cause asthma.

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