Zoology-Gas Exchange
NEET Zoology Gas Exchange MCQ Question
Type: MCQ-conceptual-Hard-Class 11
Which of the following statements about the site of gas exchange in the respiratory system is correct?
A
Gas exchange occurs in the conducting part of the respiratory system.
B
The alveoli are the primary site for the diffusion of O2 and CO2.
C
Diffusion of gases occurs uniformly throughout the respiratory tract.
D
The terminal bronchioles are the main site for gas exchange.
Correct Answer
Option B
Detailed Explanation
The alveoli and their ducts form the respiratory or exchange part of the respiratory system, which is the actual site of diffusion of O2 and CO2 between blood and atmospheric air.
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