O-LevelBiologyPlant Nutrition5090/12 · Oct/Nov 2021 · Q51 Mark

The graphs show factors affecting the rate of photosynthesis. [Figure 5.1] At which points on the graphs could the rate of photosynthesis be limited by carbon dioxide concentration?

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A1, 3 and 5

B1, 4 and 6

C2, 3 and 5

D2, 4 and 6

✓ Correct answer

C: 2, 3 and 5

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Topic: Plant Nutrition, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2021 Paper 1 Variant 2, question 5.

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