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CSS :: Plant Pathology

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91.  Pectinolytic enzymes of plant pathogens playa major role during pathogenesis in diseases like:
A. Rusts B. Downy mildew
C. Wilts, damping-off and root/foot rots D. Powdery mildew
92.  Phycomycetes belong to:
A. Fungi B. Bacteria
C. Yeast D. None of the above
93.  Phyllactinis causes the disease:
A. Powdery mildew B. Downy mildew
C. Leaf spot D. Blight
94.  Phytophthera belongs to family:
A. Peronophythoraceae B. Pythiaceae
C. Pareonosporaceae D. Albuginaceae
95.  With regard to nutrition Erysiphe is:
A. Ectoparasite B. Endoparasite
C. None of the above D. Predator
96.  Plant parasitic nematodes posses:
A. Two part oesophagus B. Three part oesophagus
C. Four part oesophagus D. None of the above
97.  Plant pathogenic viroids contain:
A. Externally seed-borne disease B. Externally seed-borne and soil-borne disease
C. Air-brone disease D. Inernally seed-borne disease
98.  "With Phase" is common in:
A. Blast of Paddy B. Bacteria blight of Paddy
C. White rust of Crucifers D. Red rot of Sugarcane
99.  Powdery mildew disease is caused by:
A. Bacterium B. Fungus
C. Virus D. Nematode
100.  Powdery mildew fungi belong to the family:
A. Erysiphaceae B. Hypocereaceae
C. Hypomycetaceae D. Nectriaceae

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