AIPMT PRELIMS2011Zoology-Respiratory System
AIPMT PRELIMS 2011 Zoology Gas Exchange MCQ Question
Type: MCQ-conceptual-Medium-Class 11
The figure given below shows a small part of human lung where exchange of gases takes place. In which one of the options given below, the one part A, B, C or D is correctly identified along with its function?
A
B : Red blood cell - transport of CO₂ mainly
B
C : Arterial capillary - passes oxygen to tissues
C
A : alveolar cavity - main site of exchange of respiratory gases
D
D : Capillary wall - exchange of O₂ and CO₂ takes place here
Correct Answer
Option C
Detailed Explanation
A is the alveolar cavity which is the main site of exchange of respiratory gases.
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