CAIE A-Level Biology AS 9.1.3 Gas Exchange Image Recognition Questions
Interpret gas-exchange images and identify structures and adaptations using evidence from each question and mark scheme.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- AS
Interpret gas-exchange images and identify structures and adaptations using evidence from each question and mark scheme.
The photomicrograph shows a section through part of the human gas exchange system.
Which structure is shown?
alveolus
bronchiole
bronchus
trachea
C