O-LevelBiologyEcology & Environment5090/11 · May/June 2015 · Q291 Mark

The diagram shows a food web. [Figure 29.1] What is likely to happen to the owl population if foxes die out?

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AIt will decrease because there will be more competition with stoats for food.

BIt will increase because there will be more rats, beetles and rabbits for them to eat.

CIt will stay the same because owls do not eat foxes.

DIt will stay the same because stoats will eat less food.

✓ Correct answer

B: It will increase because there will be more rats, beetles and rabbits for them to eat.

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Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2015 Paper 1 Variant 1, question 29.

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