AQA new specification-More about plant diseases-B5.10


More about plant diseases lesson created in accordance to the NEW AQA Specification (9-1). Includes: slide animations, embedded videos, differentiated questions, answers have also been included within the slides. This resource is NOT suitable for combined science students.

AQA spec link:
Relevant chapter: B5-Communicable diseases . AQA Biology third edition textbook-Page 92-93.

Plant diseases can be detected by:
• stunted growth
• spots on leaves
• areas of decay (rot)
• growths
• malformed stems or leaves
• discolouration
• the presence of pests.
Identification can be made by: • reference to a gardening manual • taking infected plants to a laboratory to identify the pathogen • using testing kits that contain monoclonal antibodies.
Plants can be infected by a range of viral, bacterial, and fungal pathogens as well as by insects. Knowledge of plant diseases is restricted to tobacco mosaic virus as a viral disease, black spot as a fungal disease, and aphids as insects.
Plants can be damaged by a range of ion deficiency conditions:
• stunted growth caused by nitrate deficiency
• chlorosis caused by magnesium deficiency.
Knowledge of ions is limited to nitrate ions needed for protein synthesis and therefore growth and magnesium ions needed to make chlorophyll.

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  • B5.10-More-about-plant-diseases.pptx

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Created: Sep 23, 2018

pptx, 19 MB


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