A-LevelBiologyTransport in plants9700/12 · Oct/Nov 2025 · Q291 Mark

Which row correctly describes the pressure in the xylem and the water potential in the root hair cells used in the transport of water in a transpiring plant?

Apressure in the xylem: positive, water potential in root hair cells: negative

Bpressure in the xylem: positive, water potential in root hair cells: positive

Cpressure in the xylem: negative, water potential in root hair cells: negative

Dpressure in the xylem: negative, water potential in root hair cells: positive

✓ Correct answer

C: pressure in the xylem: negative, water potential in root hair cells: negative

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Topic: Transport in plants, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Oct/Nov 2025 Paper 1 Variant 2, question 29.

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