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Plant Pathology-3

Q.1
Khaira disease of rice can be controlled by spraying__________.

Copper sulphate
Manganese sulphate
Zinc sulphate


Q.2
The alternate host of pearl millet rust is________.
Okra
Tomato
Brinjal


Q.3
In contrast to black rust, white rust is__________.
Autoecious rust
A disease of crucifers
Both


Q.4
Brown rust of wheat is caused by_________.
Puccinia striiformis
Puccinia recondita
Puccinia graminis tritici


Q.5
Grassy shoot disease is caused by___________.
Bacteria
Phytoplasma
Spiroplasma


Q.6
Ear showing honey dew symptoms is a characteristic feature of_______.
Green ear of bajra
Ergot of bajra
Grain smut of bajra

Q.7
Phyllody of sesamum is caused by___________.

Virus
Fungi
Phytoplasma


Q.8
Which of the following is a pseudo rust?
Yellow rust of wheat
Brown rust of wheat
White rust of crucifers


Q.9
The whip smut of sugarcane is caused by_________.
Ustilago maydis
Ustilago hordei
Ustilago scitaminea


Q.10
Alternate host of black stem rust of wheat in India is______.
Mahonia sp.
Barberis sp.
Thalictrum sp.


Q.11
Bud-necrosis of groundnut is transmitted by_____.
Whitefly
Aphid
Thrips


Q.12
The wilt of cotton is______.
Seed borne
Soil borne
Both


Q.13
Solar heat treatment is used to control_______.
Covered smut of barley
Smut of bajra
Loose smut of wheat


Q.14
The first recognized virus disease of plants in the world is______.
Tobacco mosaic
Cucumber mosaic
Yellow vein mosaic


Q.15
Sugarcane crop appears dry and on splitting the cane white and red bunds are seen with foul smell. The disease is__________.
Red rot
Wilt
Whip smut


Q.16
Frog-eye leaf spot disease is present in_________.
Tobacco
Potato
Cotton


Q.17
In which rust, pustules are arranged in end to end manner and forming stripes ?
Yellow rust
Black rust
White rust


Q.18
Leaf curl of tobacco is caused by__________.
Nicotiana virus -1
Nicotiana virus -10
Phytoplasma


Q.19
Root parasite of Sorghum is____________.
Cuscuta
Striga
Orobanche


Q.20
Pegion pea sterility mosaic disease is transmitted by___________.
Aphid
Whitefly
Eryophide mite


Q.21
Chickpea stunt disease is caused by_______.
Mungbean yellow mosaic virus
Leaf crinkle virus
Bean leaf roll virus


Q.22
Mungbean yellow mosaic virus is secondary transmission by the vector______.
Whitefly
Jassid
Thrips


Q.23
Stem rot of groundnut pathogen survives in the form of_____________.
Sclerotia
Chlamydospores
Oospores


Q.24
Soybean mosaic is secondarily transmitted by__________.
Seeds
Jassid
Aphids


Q.25
Leaf blotch of turmeric is caused by_________.
Alternaria porri
Colletotrichum circinans
Taphrina maculans

Number of score out of 25 = Score in percentage =


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