AQA GCSE Biology
AQA GCSE Biology
Infects: Rose plants.
Symptoms: Purple or black spots develop on leaves, which often turn yellow and drop early. It affects the growth of the plant as photosynthesis is reduced.
Treatment/control: Can be treated by using fungicides and/or removing and destroying the affected leaves.
Spread by: Wind or water.
Infects: Humans but has a lifecycle that includes the mosquito.
Symptoms: Recurrent episodes of fever that can be fatal.
Treatment/control: The spread of malaria is controlled by preventing the vectors (mosquitos) from breeding, such as removing areas of still water and using insecticides. Mosquito nets are used to avoid being bitten.
Spread by: Mosquitos.