A fungal spore lands on a leaf of a sunflower seedling. Each cell in the leaf is surrounded by a cellulose cell wall. How does the cell wall help to protect the seedling against the fungus?
It is a tough barrier that makes it difficult for the fungus to enter the cells
It releases chemicals that kill the fungus before it can enter the cells
It makes antibodies that bind to the fungus and stop it entering the cells
It forms a waxy layer that stops the fungus from reaching the cells
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.