Zoology-Gas Exchange
NEET Zoology Gas Exchange MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Which of the following statements about gas exchange in the respiratory system is correct?
A
Gas exchange occurs primarily in the alveoli due to their thin membrane and large surface area.
B
Carbon dioxide is predominantly transported in the blood as dissolved gas, and not as bicarbonate.
C
Residual Volume is the maximum volume of air a person can forcibly exhale after a deep breath.
D
The exchange of gases between alveoli and deoxygenated blood occurs during expiration only.
Correct Answer
Option A
Detailed Explanation
Gas exchange occurs in the alveoli because they have a large surface area and thin membranes, facilitating diffusion of oxygen and carbon dioxide. The other options contain misconceptions about gas transport and the mechanics of breathing.
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