PCA PLANT PATHOGENS FINAL/PRACTICE 150+ QUESTIONS AND ANSWERS 2025-
2026|WELL STRUCTURED|100% PASS
QUESTIONS ANSWERS
a factor in integrated pest management
plant pathogens can be
for controlling insects and mites
powdery mildews are caused by funguses
which of the following is a sign of a dis-
white mycelium on twigs and fruit
ease
some abiotic factors that cause plant dis-
air pollutants
ease are
which of the following biotic factors con-
viroids and viruses
tribute to plant diesease
a non obliate parasite can live on either a living or a dead hosts
kotch postulates are readily implement-
fungi
ed for
an example of human impact in the de- the use of preventative fungicide applica-
velopment in plant disease is tions
anthracnose diseases cannot occur
the presence of the pathogen in the soil
without
only helps if environmental conditions fa-
the use of pathogen free propagated ma-
vorable for disease development are not
terial
present
plant disease triangle is used for the
wounldn't occur under existing environ-
diagnosis because it allows you to dis-
mental conditions
count disease that
which of the following factors affects epi-
the virulence of the pathogens
demics
dominant environmental factor in devel-
opment in most epidemics caused by moisture
fungi is
in addition to host pathogen and environ-
ment another component that affects the the age of the host plants
development of an epidemic is
which type of pathogen decimation
air borne
method is responsible for most frequent
1/7
, PCA PLANT PATHOGENS FINAL/PRACTICE 150+ QUESTIONS AND ANSWERS 2025-
2026|WELL STRUCTURED|100% PASS
QUESTIONS ANSWERS
and most wide spread plant disease epi-
demics
most soil born diseases are single cycled diseases
serious epidemics are more likely to oc- multiple cycled diseases produce sec-
cur from a multiple cycled disease rather ondary inoculum that can cause sec-
than a single cycled disease because ondary infections
sanitation practices are often a more ef-
in a single cycled disease the primary in-
fective management tool for single cy-
coculum is the only inocuclum available
cled diseases then multi cycled diseases
for the entire season
because
a group of pathogens within a species
a race of a pathogen refers to that infects only certain varieties of a host
plant
the time between host penetration and
the first appearance of symptoms is incubation period
called the
a mushroom is an example of a basidocarp
most fungal disease that attack flowers
wet weather
are favored by
fungi penetration the host plant by direct-
open wounds
ly penetration of
obligate fungal parasites are unable to feed on dead cells
at times it is difficult to determine the
casual agent of a disease because vari-
ous agents result in similare symptoms. wilts (verticillium and fusarium)
which of the following symptoms are sim-
ilare
bacterial plant pathogens are prokaryotes
bacterial canker in tomatoes is common-
leaf hoppers
ly spread by all of the following execpt?
environmental conditions that commonly
favor the development of bacterial blights warm and humid conditions
are
2/7
2026|WELL STRUCTURED|100% PASS
QUESTIONS ANSWERS
a factor in integrated pest management
plant pathogens can be
for controlling insects and mites
powdery mildews are caused by funguses
which of the following is a sign of a dis-
white mycelium on twigs and fruit
ease
some abiotic factors that cause plant dis-
air pollutants
ease are
which of the following biotic factors con-
viroids and viruses
tribute to plant diesease
a non obliate parasite can live on either a living or a dead hosts
kotch postulates are readily implement-
fungi
ed for
an example of human impact in the de- the use of preventative fungicide applica-
velopment in plant disease is tions
anthracnose diseases cannot occur
the presence of the pathogen in the soil
without
only helps if environmental conditions fa-
the use of pathogen free propagated ma-
vorable for disease development are not
terial
present
plant disease triangle is used for the
wounldn't occur under existing environ-
diagnosis because it allows you to dis-
mental conditions
count disease that
which of the following factors affects epi-
the virulence of the pathogens
demics
dominant environmental factor in devel-
opment in most epidemics caused by moisture
fungi is
in addition to host pathogen and environ-
ment another component that affects the the age of the host plants
development of an epidemic is
which type of pathogen decimation
air borne
method is responsible for most frequent
1/7
, PCA PLANT PATHOGENS FINAL/PRACTICE 150+ QUESTIONS AND ANSWERS 2025-
2026|WELL STRUCTURED|100% PASS
QUESTIONS ANSWERS
and most wide spread plant disease epi-
demics
most soil born diseases are single cycled diseases
serious epidemics are more likely to oc- multiple cycled diseases produce sec-
cur from a multiple cycled disease rather ondary inoculum that can cause sec-
than a single cycled disease because ondary infections
sanitation practices are often a more ef-
in a single cycled disease the primary in-
fective management tool for single cy-
coculum is the only inocuclum available
cled diseases then multi cycled diseases
for the entire season
because
a group of pathogens within a species
a race of a pathogen refers to that infects only certain varieties of a host
plant
the time between host penetration and
the first appearance of symptoms is incubation period
called the
a mushroom is an example of a basidocarp
most fungal disease that attack flowers
wet weather
are favored by
fungi penetration the host plant by direct-
open wounds
ly penetration of
obligate fungal parasites are unable to feed on dead cells
at times it is difficult to determine the
casual agent of a disease because vari-
ous agents result in similare symptoms. wilts (verticillium and fusarium)
which of the following symptoms are sim-
ilare
bacterial plant pathogens are prokaryotes
bacterial canker in tomatoes is common-
leaf hoppers
ly spread by all of the following execpt?
environmental conditions that commonly
favor the development of bacterial blights warm and humid conditions
are
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