A food chain in a coastal sand-dune reserve is:
marram grass → grasshopper → sand lizard → kestrel
The biomass of marram grass is 48 000 kg.
The table shows the efficiency of biomass transfer between each pair of organisms.
| Biomass transfer | Efficiency of transfer |
|---|---|
| Marram grass to grasshopper | 12% |
| Grasshopper to sand lizard | 8% |
| Sand lizard to kestrel | 15% |
Calculate the expected biomass at trophic level 4.
Give your answer in kg.
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.