A plant chemical reduces the amount of leaf tissue eaten by insects without killing them. Fungal spores often enter this plant through insect feeding wounds.
How could this chemical also reduce fungal infection?
less feeding produces more wounds through which spores can enter
fewer living insects cause the plant cell walls to produce antibodies
fewer living insects cause the fungal spores to lose their cell walls
less feeding produces fewer wounds through which spores can enter
45 exam-style questions on Edexcel GCSE Biology 5.2 Plant and body defences, covering 5.2.1 Physical plant defences, 5.2.2 Chemical plant defences, 5.2.3 Detecting plant diseases, and 5.2.4 Human physical and chemical defences. Each one has a worked solution and a mark scheme showing where the marks go.