O-LevelBiologyEcology & Environment5090/11 · Oct/Nov 2011 · Q301 Mark

The diagram shows four ecological pyramids. In a food chain, grass is eaten by cows. The cows have insects living on their skin. The insects are eaten by birds. Which is the pyramid of mass and which is the pyramid of numbers in this food chain? [Figure 30.1]

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A1, 3

B1, 4

C3, 1

D3, 2

✓ Correct answer

A: 1, 3

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Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2011 Paper 1 Variant 1, question 30.

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