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A-LevelBiologyTransport in plants9700/12 · Feb/Mar 2022 · Q271 Mark

Why does an air bubble in a xylem vessel element stop the flow of water? 1 loss of adhesion 2 loss of cohesion 3 collapse of xylem vessel element

A1, 2 and 3
B1 and 3 only
C1 only
D2 only

✓ Correct answer

D: 2 only

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About this question

Topic
Transport in plants, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source
A-Level Biology, Feb/Mar 2022 Paper 1 Variant 2, question 27.

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