1|Page
PCA PLANT PATHOGENS EXAM NEWEST 2025/2026 ACTUAL EXAM
WITH COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
(100% VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED||
Sanitation practices are often a more effective management tool
for single cycled diseases then multi cycled diseases because -
ANSWER-in a single cycled disease the primary incoculum is the
only inocuclum available for the entire season
A race of a pathogen refers to - ANSWER-a group of pathogens
within a species that infects only certain varieties of a host plant
The time between host penetration and the first appearance of
symptoms is called the - ANSWER-incubation period
A mushroom is an example of a - ANSWER-basidocarp
Most fungal disease that attack flowers are favored by -
ANSWER-wet weather
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Fungi penetration the host plant by directly penetration of -
ANSWER-open wounds
Obligate fungal parasites - ANSWER-are unable to feed on dead
cells
At times it is difficult to determine the casual agent of a disease
because various agents result in similare symptoms. Which of the
following symptoms are similare - ANSWER-wilts (verticillium and
fusarium)
Bacterial plant pathogens are - ANSWER-prokaryotes
Bacterial canker in tomatoes is commonly spread by all of the
following execpt? - ANSWER-leaf hoppers
Environmental conditions that commonly favor the development of
bacterial blights are - ANSWER-warm and humid conditions
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Plant pathenogenic phytoplasims in bacteria are - ANSWER-
prokaryotes
Which of the following is a typical symptom caused by black rot of
crucifers - ANSWER-large V shaped chlorotic blotches
Cause of crown gull of fruit trees in many ornamentals, is in what
genus - ANSWER-agrobacterium
The bacterium responsible for crown gall over winters in all the
following except - ANSWER-insect vectors
Bacterial soft rot of vegetables is generally controlled by which of
the following measures - ANSWER-all of the above
Symptoms of an infection by bacterial soft rot include - ANSWER-
soft slimy macerated tissues
PCA PLANT PATHOGENS EXAM NEWEST 2025/2026 ACTUAL EXAM
WITH COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
(100% VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED||
Sanitation practices are often a more effective management tool
for single cycled diseases then multi cycled diseases because -
ANSWER-in a single cycled disease the primary incoculum is the
only inocuclum available for the entire season
A race of a pathogen refers to - ANSWER-a group of pathogens
within a species that infects only certain varieties of a host plant
The time between host penetration and the first appearance of
symptoms is called the - ANSWER-incubation period
A mushroom is an example of a - ANSWER-basidocarp
Most fungal disease that attack flowers are favored by -
ANSWER-wet weather
,2|Page
Fungi penetration the host plant by directly penetration of -
ANSWER-open wounds
Obligate fungal parasites - ANSWER-are unable to feed on dead
cells
At times it is difficult to determine the casual agent of a disease
because various agents result in similare symptoms. Which of the
following symptoms are similare - ANSWER-wilts (verticillium and
fusarium)
Bacterial plant pathogens are - ANSWER-prokaryotes
Bacterial canker in tomatoes is commonly spread by all of the
following execpt? - ANSWER-leaf hoppers
Environmental conditions that commonly favor the development of
bacterial blights are - ANSWER-warm and humid conditions
, 3|Page
Plant pathenogenic phytoplasims in bacteria are - ANSWER-
prokaryotes
Which of the following is a typical symptom caused by black rot of
crucifers - ANSWER-large V shaped chlorotic blotches
Cause of crown gull of fruit trees in many ornamentals, is in what
genus - ANSWER-agrobacterium
The bacterium responsible for crown gall over winters in all the
following except - ANSWER-insect vectors
Bacterial soft rot of vegetables is generally controlled by which of
the following measures - ANSWER-all of the above
Symptoms of an infection by bacterial soft rot include - ANSWER-
soft slimy macerated tissues
