A student places quadrats along a transect line from a hedge into a field.
The student records the light intensity and the percentage cover of two plants.
Table
| Distance from hedge in m | 0 | 2 | 4 | 6 | 8 |
|---|---|---|---|---|---|
| Light intensity in arbitrary units | 12 | 25 | 48 | 70 | 72 |
| Percentage cover of ivy | 60 | 45 | 20 | 5 | 0 |
| Percentage cover of grass | 5 | 20 | 50 | 80 | 85 |
Which conclusion is supported by the data?
Ivy cover decreases away from the hedge because the soil becomes drier.
Grass cover increases from 0 m to 8 m because the ivy has been removed.
Ivy cover is highest where light intensity is lowest, close to the hedge.
Grass and ivy both have the highest cover where light intensity is high.
109 exam-style questions on OCR GCSE Biology 6.1 Monitoring and maintaining the environment, covering 6.1.1 Field investigation of distribution and abundance, 6.1.2 Human interactions and biodiversity, 6.1.3 Maintaining biodiversity, and 6.1.4 Environmental change and distribution of organisms. Each one has a worked solution and a mark scheme showing where the marks go.