A-LevelBiologyBiodiversity and conservation9700/12 · Oct/Nov 2013 · Q401 Mark

Two different ecosystems of the same size, X and Y, were compared. Both ecosystems were in the same climate. The results of the comparison are shown. [Figure 40.1] Using the information in the table, which statement is not a valid suggestion concerning X and Y?

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Agreater percentage of primary producers are likely to be consumed by primary consumers in X than in Y.

BX could be a marine aquatic ecosystem and Y could be a terrestrial ecosystem.

CEnergy losses between trophic levels are likely to be lower for X than for Y.

DThere is likely to be a higher rate of photosynthesis and production of organic matter in X than in Y.

✓ Correct answer

D: There is likely to be a higher rate of photosynthesis and production of organic matter in X than in Y.

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Topic: Biodiversity and conservation, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Oct/Nov 2013 Paper 1 Variant 2, question 40.

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