A plant that grows on coastal sand dunes makes a poison in its leaves. Rabbits feed on the leaves. In one growing season, some of the plants produce less poison than usual.
Explain why producing less poison may increase grazing damage to these plants.
133 exam-style questions on AQA GCSE Biology 3.3 Plant disease, covering 3.3.1 Detection and identification of plant diseases and 3.3.2 Plant defence responses. Each one has a worked solution and a mark scheme showing where the marks go.