O-LevelBiologyEcology & Environment5090/11 · Oct/Nov 2022 · Q301 Mark

Which types of microorganism carry out decomposition in the nitrogen cycle?

Abacteria and fungi only

Bbacteria and viruses only

Cfungi and viruses only

Dbacteria, fungi and viruses

✓ Correct answer

A: bacteria and fungi only

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Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2022 Paper 1 Variant 1, question 30.

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