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O-LevelBiologyPlant Nutrition5090/11 · Oct/Nov 2013 · Q71 Mark

The diagram represents a cross section of part of a leaf. How does the oxygen content of the air at X compare to normal atmospheric air, when the leaf is in the light and when it is in the dark?

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.

Alower the same
Blower higher
Chigher the same
Dhigher lower

✓ Correct answer

D: higher lower

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About this question

Topic
Plant Nutrition, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, Oct/Nov 2013 Paper 1 Variant 1, question 7.

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