CAIE A-Level Biology AS 9.1.2 Tissue Distribution in Gas Exchange System Questions
Explain tissue distribution and roles in the gas-exchange system using evidence from each question and mark scheme.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- AS
Exam points
- Explain the distribution of tissues in the human gas exchange system and their roles.
CAIE A-Level Biology AS 9.1.2 Tissue Distribution in Gas Exchange System Questions question 1
Fig. 5.1 is a photomicrograph of a section through the lungs showing a bronchus and some alveoli.
Fig. 5.1
Describe how the distribution of tissue X in the trachea differs from that shown in Fig. 5.1.
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