Question
Biology Question on Exchange Of Gases
Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due t o :
A
proliferation of fibrous tissues and damage of the alveolar walls.
B
reduction in the secretion of surfactants by pneumocytes.
C
benign growth on mucous lining of nasal cavity.
D
inflammation of bronchi and bronchioles.
Answer
inflammation of bronchi and bronchioles.
Explanation
Solution
Asthma is a difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles. It can be due to increasing air born allergens and pollutants. Asthma is an allergic condition. Many people in urban areas are suffering from this respiratory disorder.