O-LevelBiologyEcology & Environment5090/11 · May/June 2021 · Q281 Mark

These processes occur in living organisms in a food chain. 1 excretion 2 photosynthesis 3 respiration Which processes would result in a loss of energy from a food chain?

A1 and 2

B1 and 3

C2 only

D3 only

✓ Correct answer

B: 1 and 3

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Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2021 Paper 1 Variant 1, question 28.

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