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O-LevelBiologyTransport in Plants5090/11 · Oct/Nov 2017 · Q121 Mark

The diagram shows a cut plant shoot in a container of water. What will stop the movement of water up this stem?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

Afall in the humidity of the air
Brise in the air temperature
Cair bubbles in the xylem
Dan insect sucking sugar from the phloem

✓ Correct answer

C: air bubbles in the xylem

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About this question

Topic
Transport in Plants, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, Oct/Nov 2017 Paper 1 Variant 1, question 12.

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