A woodland food chain is: oak leaves to caterpillar to blue tit to sparrowhawk. Which organism in this food chain is the secondary consumer?
Caterpillar
Oak leaves
Blue tit
Sparrowhawk
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.