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CAIE IGCSE Biology 3.1.4 Importance of Diffusion Questions

Practise explaining how diffusion of gases and solutes supports exchange in living organisms.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • explain the role of diffusion in exchanging gases and solutes in living organisms

CAIE IGCSE Biology 3.1.4 Importance of Diffusion Questions question 1

[Maximum number: 1]

The diagram shows a section through an alveolus and through a capillary.

Figure for Question CAIE IGCSE Biology 3.1.4 Importance of Diffusion Questions question 1 — CAIE IGCSE Biology

How does carbon dioxide move from Y to X ?

A

by diffusion

B

by osmosis

C

by translocation

D

by transpiration

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