A commercial rose grower must choose between two ways of dealing with rose black spot. Method 1 is to spray all of the rose bushes with a fungicide every 2 weeks. Method 2 is to pay workers to pick off and burn the affected leaves by hand each week.
Evaluate the two methods. Give a conclusion.
176 exam-style questions on AQA GCSE Biology 3.1 Communicable diseases, covering 3.1.1 Communicable (infectious) diseases, 3.1.2 Viral diseases, 3.1.3 Bacterial diseases, 3.1.4 Fungal diseases, 3.1.5 Protist diseases, 3.1.6 Human defence systems, 3.1.7 Vaccination, 3.1.8 Antibiotics and painkillers, and 3.1.9 Discovery and development of drugs. Each one has a worked solution and a mark scheme showing where the marks go.