Q26. Claviceps purpurea is the causal organism of-
- ASmut of barley
- BErogotism of rye
- CPowdery mildew of pea
- DRust of wheat
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Answer: B) Erogotism of rye
Plant Disease MCQ
33 MCQ questions with answers and explanations · page 2 of 2
Test yourself▶ 25 question test
Q27. White rust of crucifers is caused by-
- APuccinia graminis
- BUstilago tritici
- CPhytophthora infestans
- DAlbugo candida
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Answer: D) Albugo candida
Q28. Red stripe of sugarcane is caused by bacteria-
- APseudomonas rubruilineans
- BPseudomonas solanacearum
- CPseudomonas tumefaciens
- DXanthomonas rubrilineans
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Answer: D) Xanthomonas rubrilineans
Q29. In India famous Bengal famine occurred in 1943 by a disease in rice is called
- ALate blight of rice
- BRice rust
- CLeaf spot of rice
- DEarly blight of rice
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Answer: C) Leaf spot of rice
Q30. Leaf spot disease of rice is caused by-
- AFungus
- BBacteria
- CVirus
- DNone of these
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Answer: A) Fungus
Q31. Heterothallism was discovered by-
- AE.J Butler
- BA.F. Blakelec
- CJ.H. Graigic
- DB.B. Mundkar
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Answer: B) A.F. Blakelec
Q32. What is the mode of transmission of disease 'Yellow vein mosaic of bhindi (okra)' ?
- AInsect
- BSeeds
- CWater
- DAir
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Answer: A) Insect
Q33. Early blight of potato is caused by-
- APhytopthora infestans
- BAlternari solani
- CAlbugo candida
- DSclerospora graminicola
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Answer: B) Alternari solani