A tough waxy cuticle covers the surface of a leaf. What type of plant defence is the waxy cuticle?
A chemical defence that kills invading bacteria
A mechanical adaptation that deters large herbivores
A physical barrier that resists invading microorganisms
A chemical defence that poisons herbivores as they feed
58 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.