A-LevelBiologyBiodiversity and conservation9700/12 · Oct/Nov 2011 · Q381 Mark

Within an ecosystem, the top consumers in a food chain are few in number. Which statement explains this?

AEnergy losses in the consumers' digestive systems.

BEnergy losses occur at each trophic level.

CTop consumers have a low reproductive rate.

DTop consumers are large in size.

✓ Correct answer

B: Energy losses occur at each trophic level.

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Topic: Biodiversity and conservation, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Oct/Nov 2011 Paper 1 Variant 2, question 38.

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