12.2- Plant Diseases & Defences Flashcards
(9 cards)
1
Q
What is a vector
A
2
Q
What are examples of vectors
A
- Water
- Wind
- Animals
- Humans
3
Q
What factors increase the risk of communicable diseases
A
- Crop variety
- Overcrowding
- Mineral nutrition
- Climate
4
Q
An example of bacteria
A
Ringrot
5
Q
An example of a virus
A
Tobacco Mosaic Virus
6
Q
An example of fungi
A
Black Sigatoka
7
Q
An example of protoctist
A
Tomato Blight
8
Q
Physical Defences
A
- Waxy cuticle
- Cell wall
- Callose production
9
Q
Chemical Defences
A
- Insecticides
- Insect repellent
- Antibacterial substances
- Toxins
