O-LevelBiologyTransport in Plants5090/11 · May/June 2017 · Q111 Mark

Water and ions can reach the xylem of a plant root through cell walls, without passing through a cell membrane. How do these substances move through the cell walls?

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Awater: diffusion, ions: diffusion

Bwater: diffusion, ions: osmosis

Cwater: osmosis, ions: diffusion

Dwater: osmosis, ions: osmosis

✓ Correct answer

A: water: diffusion, ions: diffusion

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Topic: Transport in Plants, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2017 Paper 1 Variant 1, question 11.

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