Plants have defences against microorganisms and against animals that eat them.
Name two physical defences that plants use to resist invasion by microorganisms.
Thorns on a stem deter animals from eating a plant. What type of plant defence are thorns?
Give one chemical defence that a plant uses against herbivores.
An animal eats part of a poisonous plant and becomes ill. Suggest why the animal does not eat that type of plant again.
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.