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WorksheetsPlant Pathology
Total questions: 10
Worksheet time: 8mins
Name
Class
Date
1.
(a) is any abnormal condition that alters the appearance or function of a plant.
2.
Visible effects of disease on plants are called ________
a)
Signs
b)
symptoms
c)
both
d)
none
3.
Bacterial ooze is an example of ____________
a)
Signs
b)
symptoms
c)
both
d)
none
4.
The parasitic organism that causes a disease is a (a)
5.
The plant invaded by the pathogen and serving as its food source is referred to as a (a)
6.
Plant pathogen includes
a)
fungi
b)
bacteria
c)
viruses
d)
all the above
7.
Which plant pathogen structure is delicate, threadlike filaments called hyphae
a)
fungi
b)
nematodes
c)
algae
d)
virus
8.
Which pathogen can live only in living organisms
(a)
9.
Pathogen can survive in
a)
Crop residue
b)
weeds
c)
seeds
d)
all of these
10.
Virus can disperse only through (a)
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