O-LevelBiologyTransport in Plants5090/11 · Oct/Nov 2022 · Q131 Mark

The graph shows the transpiration rates of two plants during one day. Both plants were grown under identical conditions. Which statement explains what the graph shows?

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APlant X closes its stomata during the brightest part of the day.

BPlant Y closes its stomata during the brightest part of the day.

CPlants X and Y close their stomata during the brightest part of the day.

DPlant Y has no stomata.

✓ Correct answer

B: Plant Y closes its stomata during the brightest part of the day.

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Topic: Transport in Plants, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2022 Paper 1 Variant 1, question 13.

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