In a pond, water fleas eat algae. Small fish eat water fleas. Herons eat both water fleas and small fish.
Which statement correctly describes the heron's feeding roles in this community?
It is a primary consumer when eating water fleas and a secondary consumer when eating small fish.
It is a secondary consumer when eating water fleas and a tertiary consumer when eating small fish.
It is a tertiary consumer when eating water fleas and a secondary consumer when eating small fish.
It is a secondary consumer when eating water fleas and a secondary consumer when eating small fish.
40 exam-style questions on AQA GCSE Biology 7.2 Organisation of an ecosystem, covering 7.2.1 Levels of organisation, 7.2.2 How materials are cycled, 7.2.3 Decomposition, and 7.2.4 Impact of environmental change (HT only). Each one has a worked solution and a mark scheme showing where the marks go.