Lecture 2c Flashcards
1
Q
Caused by the lack of something that supports life.
A
Abiotic diseases
2
Q
Symptoms of abiotic diseases may range from what?
A
Slight to severe
3
Q
Abiotic diseases occur on the absence of ____
A
Pathogens
4
Q
Abiotic diseases cannot be ____ from diseased to healthy plants
A
transmitted
5
Q
Noninfectious diseases may affect plants in all ____ of their lives
A
stages
6
Q
4 Physiopaths
A
- Air pollutants
- Excess or deficiency of environmental factors
- Chemical toxicants
- Mineral nutrient deficiency/ toxicity
7
Q
3 Types of Air Pollutants
A
- Particulate matter
- Non-photochemically produced gaseous pollutants
- Photochemically-produced gaseous pollutants
8
Q
Source: incineration of garbage and plant materials, dust, vehicle emissions
A
Particulate matter
9
Q
Symptom of particulate matter
A
- Leaf necrosis
2. Chlorosis
10
Q
2 Types of particulate matter
A
- Coarse particulates
2. Fine particulates
11
Q
Size of coarse particulates
A
2.5 to 10μm
12
Q
Size of fine particulates
A
less than 2.5μm
