O-LevelBiologyTransport in Plants5090/11 · Oct/Nov 2023 · Q101 Mark

A student used the apparatus shown to measure the rate of water loss by the leafy stem at increasing wind speeds. Which graph was produced from their results?

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.

A[Graph A shows water loss constant regardless of wind speed]

B[Graph B shows water loss increasing then decreasing with wind speed]

C[Graph C shows water loss gradually increasing with wind speed, then plateauing]

D[Graph D shows water loss exponentially increasing with wind speed]

✓ Correct answer

C: [Graph C shows water loss gradually increasing with wind speed, then plateauing]

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Topic: Transport in Plants, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2023 Paper 1 Variant 1, question 10.

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