Biology Plant Diseases 0.0 / 5 ? BiologyHomeostasisPlant diseaseGCSEAQA Created by: Alex simCreated on: 30-04-19 13:46 What are the four main types of pathogens Virus,bacteria,fungi,protists 1 of 14 Which type of diseases is caused by pathogens communicable diseases 2 of 14 What is the life cycle of a pathogen Infect a host, reproduce (or replicate for a virus),infect other organisms 3 of 14 What do plant pathogens do to plants They kill or reduce the growth of many plants 4 of 14 What happened in Ireland 1850 The Irish potato famine which caused a large amount of deaths through starvation 5 of 14 What does TMV stand for Tobacco mosaic virus 6 of 14 What species does TMV infect The virus infects tobacco and other closely related species such as tomatoes and peppers 7 of 14 What does TMV do to the plant The virus kills the chloroplast and changes there green colour to a yellow or white mosaic pattern 8 of 14 Is there a cure for TMV No the only option is to stop their crops from being infected and stop the spread 9 of 14 What type of pathogen is rose black spot A fungus 10 of 14 What does rose black spot do the plant Creates black spots on the leaves that limit photosynthesis 11 of 14 Can it be treated It is treatable using fungicides 12 of 14 Can insects count as pathogens Yes such as aphids 13 of 14 Where are aphids usually seen In UK greenhouses on new shoots 14 of 14
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