Plant Pathology Fungicides Part 1
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Question No. 1
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What is the primary function of fungicides?
A.
To kill insects
B.
To kill weeds
C.
To kill fungi
D.
To kill bacteria
Question No. 2
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Which of the following is NOT a main group of sulfur fungicides?
A.
Elemental sulfur
B.
Lime sulfur
C.
Copper sulfate
D.
None of the above
Question No. 3
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Which fungal disease are sulfur fungicides most effective against?
A.
Downy mildews
B.
Powdery mildews
C.
Rusts
D.
Smuts
Question No. 4
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Who discovered the fungicidal properties of copper sulfate?
A.
PME Millardet
B.
Von Schmeling
C.
Prevost
D.
Kulka
Question No. 5
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What is the name of the fungicide discovered by PME Millardet in 1885?
A.
Burgundy mixture
B.
Bordeaux mixture
C.
Chantarelle mixture
D.
Thiram
Question No. 6
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What are the main components of Bordeaux mixture?
A.
Copper sulfate, lime, water
B.
Copper sulfate, sodium carbonate, water
C.
Copper carbonate, red lead, raw linseed oil
D.
Thiram, zinc, manganese
Question No. 7
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What distinguishes Burgundy mixture from Bordeaux mixture?
A.
It contains sodium carbonate instead of lime.
B.
It contains more copper sulfate.
C.
It contains less water.
D.
It is used for different diseases.
Question No. 8
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What is Chantarelle mixture primarily used for?
A.
Seed treatment
B.
Soil sterilization
C.
Wound dressing for apple and pear trees
D.
Controlling powdery mildew
Question No. 9
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Which element is a key component in the structural formula of thiocarbamate fungicides?
A.
Sulfur
B.
Copper
C.
Zinc
D.
Manganese
Question No. 10
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Which thiocarbamate fungicide is commonly used as a seed protectant?
A.
Ziram
B.
Thiram
C.
Vapam
D.
Metham-sodium
Question No. 11
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Which fungicide contains both zinc and manganese?
A.
Ziram
B.
Thiram
C.
Carboxin
D.
Metalaxyl
Question No. 12
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Which fungicide is used as a soil sterilant?
A.
Vapam/Metham-sodium
B.
Thiram
C.
Ziram
D.
Carboxin
Question No. 13
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Who developed the first systemic fungicide, Carboxin?
A.
Von Schmeling and Kulka
B.
PME Millardet
C.
Prevost
D.
Metalaxyl
Question No. 14
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What is the trade name of Carboxin?
A.
Plantvax
B.
Vitavax
C.
Bavistin
D.
Captan
Question No. 15
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Which diseases is Carboxin effective against?
A.
Smuts and rusts
B.
Powdery mildews and downy mildews
C.
Leaf spots and blights
D.
Wilts and rots
Question No. 16
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What is the trade name of Oxycarboxin?
A.
Vitavax
B.
Plantvax
C.
Benomyl
D.
Metalaxyl
Question No. 17
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Which diseases does Oxycarboxin target?
A.
Rusts of wheat
B.
Powdery mildews
C.
Downy mildews
D.
Bacterial diseases
Question No. 18
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Which fungicide is also known as Benomyl?
A.
Bavistin
B.
Carboxin
C.
Metalaxyl
D.
Captan
Question No. 19
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What type of fungicide is Benomyl?
A.
Systemic
B.
Contact
C.
Protectant
D.
Soil
Question No. 20
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Which fungicide was introduced in 1977 and is active on oomycete fungi?
A.
Metalaxyl
B.
Carboxin
C.
Benomyl
D.
Captan
Question No. 21
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What is the primary target of Metalaxyl?
A.
Oomycete fungi
B.
Ascomycete fungi
C.
Basidiomycete fungi
D.
Bacterial pathogens
Question No. 22
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Why are organo-mercurial fungicides not widely used for plant disease control?
A.
High toxicity
B.
Low efficacy
C.
High cost
D.
Limited availability
Question No. 23
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Which of the following is an example of an organo-mercurial fungicide?
A.
Agrosan GN
B.
Captan
C.
Karathane
D.
Streptomycin
Question No. 24
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What is Captan primarily used for?
A.
Seed treatment and soil drenching
B.
Controlling powdery mildew
C.
Treating bacterial diseases
D.
Controlling rusts
Question No. 25
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Which fungicide is used to control powdery mildew and mites?
A.
Karathane
B.
Captan
C.
Streptomycin
D.
Metalaxyl
Question No. 26
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Which antibiotic is effective against bacterial seed-borne pathogens?
A.
Streptomycin
B.
Oxytetracycline
C.
Agrimycin
D.
Benomyl
Question No. 27
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What is Agrimycin a combination of?
A.
Streptomycin and Oxytetracycline
B.
Captan and Karathane
C.
Carboxin and Oxycarboxin
D.
Benomyl and Metalaxyl
Question No. 28
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Which fungal diseases are Triazoles most active against?
A.
Powdery mildews, rusts, and leaf spot fungi
B.
Downy mildews and blights
C.
Wilts and rots
D.
Smuts and bunts
Question No. 29
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What group of fungicides do Triazoles belong to?
A.
Sterol biosynthesis inhibitors (SBIs)
B.
Thiocarbamates
C.
Benzimidazoles
D.
Phenylamides
Question No. 30
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Which of these is a copper-based fungicide?
A.
Bordeaux mixture
B.
Thiram
C.
Carboxin
D.
Benomyl
Question No. 31
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What is the ratio of copper sulfate, lime, and water in Bordeaux mixture?
A.
5:5:50
B.
1:1:10
C.
2:2:20
D.
10:10:100
Question No. 32
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What is the active ingredient in lime sulfur?
A.
Sulfur
B.
Copper
C.
Zinc
D.
Manganese
Question No. 33
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Which fungicide is used to control damping-off disease?
A.
Captan
B.
Karathane
C.
Benomyl
D.
Metalaxyl
Question No. 34
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Which fungicide is effective against apple scab?
A.
Captan
B.
Karathane
C.
Benomyl
D.
Metalaxyl
Question No. 35
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Which fungicide is used as a wound protectant for trees?
A.
Chantarelle mixture
B.
Bordeaux mixture
C.
Burgundy mixture
D.
Lime sulfur
Question No. 36
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What is the main component of Burgundy mixture that differentiates it from Bordeaux mixture?
A.
Sodium carbonate
B.
Lime
C.
Copper sulfate
D.
Water
Question No. 37
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Which fungicide is a systemic fungicide?
A.
Benomyl
B.
Captan
C.
Karathane
D.
Sulfur
Question No. 38
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Which fungicide interferes with sterol biosynthesis in fungi?
A.
Triazoles
B.
Thiocarbamates
C.
Benzimidazoles
D.
Phenylamides
Question No. 39
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Which fungicide is effective against both fungi and bacteria?
A.
Organo-mercurial fungicides
B.
Captan
C.
Karathane
D.
Benomyl
Question No. 40
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Which antibiotic is used in combination with streptomycin to reduce the development of resistant bacterial strains?
A.
Oxytetracycline
B.
Tetracycline
C.
Chloramphenicol
D.
Erythromycin
Question No. 41
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What is the target site of action for phenylamide fungicides like Metalaxyl?
A.
Oomycete fungi
B.
Ascomycete fungi
C.
Basidiomycete fungi
D.
All fungi
Question No. 42
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Which fungicide is a dithiocarbamate?
A.
Thiram
B.
Benomyl
C.
Captan
D.
Metalaxyl
Question No. 43
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Which fungicide is used as a soil fumigant?
A.
Metham-sodium
B.
Thiram
C.
Carboxin
D.
Benomyl
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