Here is a food chain from a garden.
lettuce → slug → hedgehog
The arrow means ‘is eaten by’.
Which organism in this food chain makes its own food by photosynthesis?
The organism that makes its own food is at trophic level 1.
Name the organism at trophic level 2.
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.