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2022 BGCSE Biology Paper-1 Question-21
Questions
Q-1
Q-2
Q-3
Q-4
Q-5
Q-6
Q-7
Q-8
Q-9
Q-10
Q-11
Q-12
Q-13
Q-14
Q-15
Q-16
Q-17
Q-18
Q-19
Q-20
Q-21
Q-22
Q-23
Q-24
Q-25
Q-26
Q-27
Q-28
Q-29
Q-30
Q-31
Q-32
Q-33
Q-34
Q-35
Q-36
Q-37
Q-38
Q-39
Q-40
Q-41
Q-42
Q-43
Q-44
Q-45
Q-46
Q-47
Q-48
Q-49
Q-50
Use the diagram of the respiratory system to answer question 21 and 22. In which labelled structure does gas exchange take place?
W
X
Y
Z
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