A student estimates the number of primrose plants in a woodland clearing.
The student randomly places six square quadrats, each measuring 0.5 m×0.5 m0.5\ \text{m} \times 0.5\ \text{m}0.5 m×0.5 m.
| Quadrat | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| Number of primrose plants | 4 | 7 | 5 | 8 | 6 | 6 |
The woodland clearing has an area of 650 m2.
Calculate the estimated number of primrose plants in the whole woodland clearing.
Show your working.
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.