O-LevelBiologyEcology & Environment5090/11 · May/June 2018 · Q301 Mark

Which stage of the carbon cycle depends on the presence of bacteria and fungi in the soil?

Acombustion

Bdecomposition

Cphotosynthesis

Drespiration

✓ Correct answer

B: decomposition

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Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2018 Paper 1 Variant 1, question 30.

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