Scientists test two bacterial species for growth. Food supply is kept the same. A positive value means the population increased.
| Conditions | Increase in species X / % | Increase in species Y / % |
|---|---|---|
| 20°C, low salt | 60 | 0 |
| 20°C, very high salt | 0 | 50 |
| 80°C, low salt | 0 | 0 |
| 80°C, very high salt | 0 | 0 |
Which conclusion about Y is supported?
Y is adapted to extreme temperature, but the results do not show salt tolerance.
Y is adapted to extreme temperature, and the results also show salt tolerance.
Y is adapted to extreme salinity, but the results do not show heat tolerance.
Y is adapted to extreme salinity, and the results also show heat tolerance.
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.