O-LevelBiologyEcology & Environment5090/12 · May/June 2020 · Q301 Mark

The diagram shows parts of the nitrogen cycle. [Figure 30.1] Which arrow represents the action of the root nodule bacteria of leguminous plants?

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.

AArrow A on the diagram

BArrow B on the diagram

CArrow C on the diagram

DArrow D on the diagram

✓ Correct answer

A: Arrow A on the diagram

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Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2020 Paper 1 Variant 2, question 30.

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