Scientists sterilised pieces of dead wheat straw and then added one species of fungus. They took measurements at the start and after 4 weeks.
| Measurement | At the start | After 4 weeks |
|---|---|---|
| Dry mass of straw in g | 12.0 | 8.4 |
| Concentration of soluble nutrients in the straw in mg/g | 15 | 42 |
| Dry mass of fungus in g | 0.30 | 1.10 |
Describe how the fungus obtains nutrients from the dead straw. Use all the results in your answer.
103 exam-style questions on AQA GCSE Biology 7.4 Trophic levels in an ecosystem, covering 7.4.1 Trophic levels, 7.4.2 Pyramids of biomass, and 7.4.3 Transfer of biomass. Each one has a worked solution and a mark scheme showing where the marks go.