A student exposed leaves to a plant pathogen and used a microscope to record where it entered the leaves. The cuticle was intact during this investigation.
| Entry site | Number of pathogen entry sites recorded |
|---|---|
| Stomata | 27 |
| Other parts of the leaf surface | 3 |
Explain the pattern in the results and predict how the pattern would change if the cuticle were damaged in several places.
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.