Class 11 NEET Biology Breathing and Exchange of Gases

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Question : 19 of 65

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

[NEET 2019]

inflammation of bronchi and bronchioles
proliferation of fibrous tissues and damage of the alveolar walls
reduction in the secretion of surfactants by pneumocytes.
benign growth on mucous lining of nasal cavity

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