O-LevelBiologyEcology & Environment5090/11 · Oct/Nov 2010 · Q321 Mark

Lichens are organisms which are very sensitive to air pollution. The graph shows how the distance from a coal-fired power station affects the number of different types of lichen growing. [Graph] Which conclusion can be drawn from this information?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

ALichens grow faster near the power station.

BLichens grow more slowly near the power station.

CSulfur dioxide from the power station inhibits the growth of lichens.

DThere are fewer different types of lichen growing near the power station.

✓ Correct answer

D: There are fewer different types of lichen growing near the power station.

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Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2010 Paper 1 Variant 1, question 32.

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