PCA PLANT PATHOGENS ACTUAL FINAL EXAM || MOST
RECENT EXAM 2026-2027 ACTUAL COMPLETE REAL
EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED
A+ | GUARANTEED SUCCESS!! NEWEST
EXAM | JUST RELEASED!!
How can a "on plant" disease pattern help evaluate the cause
of the disease - ANSWER -abiotic disease do not have signs,
symptoms may be uniform in stages of development, and
lesions have sharp borders between healthy and affected tissue
How can a "across field" disease pattern help evaluate the
cause of the disease - ANSWER -abiotic symptoms may be
uniformly distributed across field or in strips, and may affect
many different hosts where biotic disease maybe more random
and host specific
How can soil factors influence disease occurrence -
ANSWER -moisture,
structure,
texture
How can irrigation factors influence disease occurrence -
ANSWER -too much water can spread fungi and drown roots,
too little water can stress the plant and make it more
susceptible
,How can fertilizer/pesticides used influence disease occurrence
- ANSWER fertilizer deficiency/toxicity can damage plant and
make it susceptible to biotic disease, pesticide can influence
what pests are present and eliminated
How can the planting date influence disease occurrence -
ANSWER -earlier or
later planting dates can be timed to miss conditions that
are optimal for
pathogen
development
How can the cropping pattern influence disease occurrence -
ANSWER rotation and polycultures make it difficult for
pathogens with a narrow host range to do damage, whereas
monoculture and no rotations make it easier for epidemics
How can weed populations influence disease occurrence -
ANSWER -weeds can be reservoirs of different plant
pathogens, so high populations could lead to increase
incidence of plant disease
How can the previous crop and diseases influence disease
occurrence - ANSWER -previous diseases could overwinter and
reinfect a new crop, and the previous crop could determine
what pathogens are present in the paint debris
, How are sample sizes important when sending samples to the
lab for disease confirmation - ANSWER -larger samples size
give more reliable results, with greater power and precision
How are samples with a range of symptoms important when
sending samples to
the lab for disease confirmation - ANSWER -some diseases
share symptoms at
different stages of development, a range of symptoms
could reduce the
possibility of getting a
false result
How are dead and living tissue for cultures important when
sending samples to
the lab for disease confirmation - ANSWER -some pathogen
survive in dead
tissue, other in alive tissue (important factor for
determine pathogen)
How is labeling and handling of samples important when
sending samples to the lab for disease confirmation - ANSWER
-labeling with information helps eliminate possibilities, and
samples need to be handled so that they do not rot in bags and
are preserved in field-like conditions.
What are the three components of plant disease triangle -
ANSWER -the
RECENT EXAM 2026-2027 ACTUAL COMPLETE REAL
EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED
A+ | GUARANTEED SUCCESS!! NEWEST
EXAM | JUST RELEASED!!
How can a "on plant" disease pattern help evaluate the cause
of the disease - ANSWER -abiotic disease do not have signs,
symptoms may be uniform in stages of development, and
lesions have sharp borders between healthy and affected tissue
How can a "across field" disease pattern help evaluate the
cause of the disease - ANSWER -abiotic symptoms may be
uniformly distributed across field or in strips, and may affect
many different hosts where biotic disease maybe more random
and host specific
How can soil factors influence disease occurrence -
ANSWER -moisture,
structure,
texture
How can irrigation factors influence disease occurrence -
ANSWER -too much water can spread fungi and drown roots,
too little water can stress the plant and make it more
susceptible
,How can fertilizer/pesticides used influence disease occurrence
- ANSWER fertilizer deficiency/toxicity can damage plant and
make it susceptible to biotic disease, pesticide can influence
what pests are present and eliminated
How can the planting date influence disease occurrence -
ANSWER -earlier or
later planting dates can be timed to miss conditions that
are optimal for
pathogen
development
How can the cropping pattern influence disease occurrence -
ANSWER rotation and polycultures make it difficult for
pathogens with a narrow host range to do damage, whereas
monoculture and no rotations make it easier for epidemics
How can weed populations influence disease occurrence -
ANSWER -weeds can be reservoirs of different plant
pathogens, so high populations could lead to increase
incidence of plant disease
How can the previous crop and diseases influence disease
occurrence - ANSWER -previous diseases could overwinter and
reinfect a new crop, and the previous crop could determine
what pathogens are present in the paint debris
, How are sample sizes important when sending samples to the
lab for disease confirmation - ANSWER -larger samples size
give more reliable results, with greater power and precision
How are samples with a range of symptoms important when
sending samples to
the lab for disease confirmation - ANSWER -some diseases
share symptoms at
different stages of development, a range of symptoms
could reduce the
possibility of getting a
false result
How are dead and living tissue for cultures important when
sending samples to
the lab for disease confirmation - ANSWER -some pathogen
survive in dead
tissue, other in alive tissue (important factor for
determine pathogen)
How is labeling and handling of samples important when
sending samples to the lab for disease confirmation - ANSWER
-labeling with information helps eliminate possibilities, and
samples need to be handled so that they do not rot in bags and
are preserved in field-like conditions.
What are the three components of plant disease triangle -
ANSWER -the
