A student compares two areas of a woodland.
The Table shows her results.
Table
| Area A (under trees) | Area B (clearing) | |
|---|---|---|
| Light intensity in arbitrary units | 15 | 90 |
| Soil moisture in %\%% | 35 | 20 |
| Number of species of flowering plant on the ground | 3 | 14 |
Name one abiotic factor shown in the Table.
Explain why more species of flowering plant grow in area B than in area A.
The student also wants to measure the pH of the soil in each area.
Describe how she could do this.
Rabbits feed on the plants in the clearing.
Give one other biotic factor that could affect the number of plants in the clearing.
111 exam-style questions on OCR GCSE Biology 4.1 Ecosystems, covering 4.1.1 Cycling of materials in ecosystems, 4.1.2 Microorganisms in cycling materials, 4.1.3 The carbon and water cycles, 4.1.4 Factors affecting decomposition, 4.1.5 Levels of organisation in an ecosystem, 4.1.6 Abiotic and biotic factors affecting communities, 4.1.7 Interdependence and competition, 4.1.8 Trophic levels, 4.1.9 Pyramids of biomass, and 4.1.10 Efficiency of biomass transfers. Each one has a worked solution and a mark scheme showing where the marks go.