PCA PLANT PATHOGENS EXAM NEWEST 2025
COMPLETE 400 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED
A+
plant pathogens can be -
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v answera factor in integrated pest management for controlling insects and mi
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tes
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powdery mildews are caused by - answerfunguses
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which of the following is a sign of a disease -
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v answerwhite mycelium on twigs and fruit
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some abiotic factors that cause plant disease are - answerair pollutants
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which of the following biotic factors contribute to plant diesease -
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v answerviroids and viruses v v
a non obliate parasite - answercan live on either a living or a dead hosts
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kotch postulates are readily implemented for - answerfungi
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an example of human impact in the development in plant disease is -
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v answerthe use of preventative fungicide applications
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anthracnose diseases cannot occur without - v v v v v
v answerthe presence of the pathogen in the soil
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the use of pathogen free propagated material -
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v answeronly helps if environmental conditions favorable for disease develop
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ment are not present
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plant disease triangle is used for the diagnosis because it allows you to discou
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nt disease that -
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v answerwounldn't occur under existing environmental conditions v v v v v
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which of the following factors affects epidemics -
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v answerthe virulence of the pathogens v v v v
dominant environmental factor in development in most epidemics caused by
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fungi is - answermoisture
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in addition to host pathogen and environment another component that affect
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s the development of an epidemic is - answerthe age of the host plants
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which type of pathogen decimation method is responsible for most frequent a
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nd most wide spread plant disease epidemics - answerair borne
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most soil born diseases are - answersingle cycled diseases
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