A-LevelBiologyTransport in plants9700/12 · Feb/Mar 2023 · Q261 Mark

Which feature of xylem vessel elements helps adhesion during transpiration?

ALignin forms a complete secondary wall.

BNew vessels carry extra water as the plants grow.

CThere are no cross walls between vessel elements.

DThe vessel elements form a narrow tube.

✓ Correct answer

D: The vessel elements form a narrow tube.

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Topic: Transport in plants, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Feb/Mar 2023 Paper 1 Variant 2, question 26.

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