12.2- Plant Diseases & Defences Flashcards
(9 cards)
What is a vector
What are examples of vectors
- Water
- Wind
- Animals
- Humans
What factors increase the risk of communicable diseases
- Crop variety
- Overcrowding
- Mineral nutrition
- Climate
An example of bacteria
Ringrot
An example of a virus
Tobacco Mosaic Virus
An example of fungi
Black Sigatoka
An example of protoctist
Tomato Blight
Physical Defences
- Waxy cuticle
- Cell wall
- Callose production
Chemical Defences
- Insecticides
- Insect repellent
- Antibacterial substances
- Toxins