Ash dieback is a disease of ash trees caused by a fungus. Infected trees have dark patches on their leaves, leaves that die and fall early, and dead shoots at the top of the tree. The disease has spread across large areas of woodland.
Give two signs of disease, from the information above, that would be recorded for an infected ash tree.
Suggest why testing kits are more useful than laboratory tests when a large woodland is being surveyed for this disease.
Suggest one reason why some samples from the woodland are still sent to a laboratory.
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.