Detection and Identification of Plant Diseases (OCR GCSE Biology A (Gateway Science Suite)): Flashcards

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Detection and Identification of Plant Diseases
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Symptom indicating nitrate deficiency

Stunted growth

Black spot fungus on roses causes

Spots on leaves

What causes crown galls?

Bacterial infections

What causes malformed stems/leaves?

Aphid infestations

Chlorosis definition

Yellowing of leaves

Ion deficiency causing chlorosis

Magnesium deficiency

Tobacco mosaic virus symptom pattern

Mosaic pattern of discolouration

Lab methods to identify plant diseases

Microscopic analysis or culturing techniques

Monoclonal antibody testing detects

Specific pathogens

Plant process affected by TMV

Photosynthesis

Black spot effect on photosynthesis

Reduces photosynthesis

Role of nitrates in plants

Convert sugars to proteins for growth

Role of magnesium in plants

Production of chlorophyll

What aphids feed on

Plant sap

Blights on potatoes cause

Areas of decay

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