Ecologists are estimating the population of a rare wildflower species, Anemone nemorosa (wood anemone), in a newly restored rectangular woodland clearing.
The clearing measures 45 m45\text{ m}45 m by 16 m16\text{ m}16 m. The ecologists randomly place a 1 m×1 m1\text{ m} \times 1\text{ m}1 m×1 m quadrat at five different locations. Their results are shown in the table below:
| Sample Number | Number of Wood Anemones |
|---|---|
| 1 | 9 |
| 2 | 14 |
| 3 | 5 |
| 4 | 11 |
| 5 | 11 |
Calculate the area of the woodland clearing.
Calculate the mean number of wood anemones per quadrat.
Estimate the total population of wood anemones in the woodland clearing.
State one way the ecologists could improve the accuracy of their estimate.
63 exam-style questions on AQA GCSE Biology 7.1 Adaptations, interdependence and competition, covering 7.1.1 Communities, 7.1.2 Abiotic factors, 7.1.3 Biotic factors, and 7.1.4 Adaptations. Each one has a worked solution and a mark scheme showing where the marks go.