A researcher surveys the organisms living in a rotting log.
| Stage | Information recorded |
|---|---|
| 1 | Every woodlouse in the log is counted at the same time. A total of 38 woodlice is recorded, but their species are not identified. |
| 2 | The 38 woodlice are identified: 31 belong to species P and 7 belong to species Q. |
| 3 | All the populations of living organisms in the log, including woodlice, fungi and centipedes, and their interactions are recorded. |
| 4 | The moisture level inside the log and how it affects the organisms are also recorded. |
A student claims that stage 1 describes one population.
Evaluate the student's claim. Use information from stages 1 and 2.
Explain how the information added in stage 4 changes the level of organisation represented by the record.
82 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.