A technician checks pepper seedlings in a school greenhouse and reports signs of disease as soon as they appear. Why may detecting disease early increase the chance that an affected seedling recovers?
The cause can be confirmed from the first visible sign alone
Suitable treatment can begin when it is most likely to work
The same treatment can be used for diseases with similar signs
The seedling can start making antibodies against the pathogen
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.