Investigators measure the sulfur dioxide concentration in the air at two rose gardens. They plan to count blackspot fungus on the same number of leaves from similar rose bushes at each garden.
| Garden | Sulfur dioxide concentration in air in μg m−3\mathrm{\mu g\,m^{-3}}μgm−3 |
|---|---|
| P | 8 |
| Q | 64 |
Which prediction is best supported by these measurements?
Blackspot fungus is likely to have a similar abundance at gardens P and Q.
Blackspot fungus is likely to be more abundant at garden Q than at garden P.
Blackspot fungus is likely to be more abundant at garden P than at garden Q.
Blackspot fungus is likely to be absent from both garden P and garden Q.
101 exam-style questions on Edexcel GCSE Biology 9.3 Material cycles and decomposition, covering 9.3.1 Cycling of materials through ecosystems, 9.3.2 The carbon cycle, 9.3.3 The water cycle, 9.3.4 The nitrogen cycle, 9.3.5 Indicator species and pollution, 9.3.6 Decomposition in preservation and composting, and 9.3.7 Rate changes in decay of biological material. Each one has a worked solution and a mark scheme showing where the marks go.