An aquatic food chain is shown below:
Algae→Daphnia→Minnow \text{Algae} \rightarrow \text{Daphnia} \rightarrow \text{Minnow} Algae→Daphnia→MinnowState the ultimate source of energy for the Algae in this food chain.
For each of the three organisms in the food chain, identify all appropriate terms from the list below that describe their feeding relationship:
When the Daphnia eats the Algae, about 90%90\%90% of the biomass is lost. State two ways in which this biomass is lost between these trophic levels.
61 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.