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Plant Pathology-2

Q.1
Who of the following is regarded as “Father of Modern Plant Pathology?

R.S. Singh
Millardet
Anton de Bary


Q.2
Direct dispersal is also known as:________.
Active dispersal
Passive dispersal
Both


Q.3
Who is considered as “Father of Mycology”?
P.A. Micheli
Anton de Bary
Millardet


Q.4
The initial invasion of a host by a pathogen is known as :_________.
Penetration
Virulent
Transmission


Q.5
Primary infection :___________.
Initiate the disease
Spread the disease
Both


Q.6
Organism which survive indefinitely in the soil as saprophytes in the absence of the host plant is known as :_______.
Soil invaders
Rhizosphere colonizers
Soil inhabitants

Q.7
Which of the following disease is an example of autoecious rust?

Bajra rust
Black stem rust of wheat
Linseed rust


Q.8
A parasitic fungus that require two different kinds of hosts to complete its life cycle is called as :__________.
Autoecious rust
Heteroecious rust
Both


Q.9
Alternate host of black stem rust of wheat is _________.
Bajra
Brinjal
Barberry


Q.10
Fusarium spp. persist in the soil as dormant structure like______.
Oospores
Chlamydospores
Sclerotia


Q.11
Black scurf of potato was introduced in Gujarat through seed tubers brought from the source of the_____.
Maharashtra
Madhya Pradesh
Himachal Pradesh


Q.12
Leaf curl of chilli is transmitted by______.
Aphid
Whitefly
Jassid


Q.13
Pigeonpea sterility mosaic virus is transmitted by_______.
Aphid
Whitefly
Eryophyiid mite


Q.14
Bacteria enter plants mostly through______.
Wounds
Stomata
Lenticels


Q.15
Which of the following fungi is an example of ectoparasite?
Downy mildew
Early blight
Powdery mildew


Q.16
When the defence mechanism is controlled by a single gene pair is called as :__________.
Oligogenic resistance
Monogenic resistance
Polygenic resistance


Q.17
Which of the following is a compound interest disease?
Damping off disease
Vascular wilt disease
Stem rust of wheat


Q.18
HS toxin is produced by___________.
Helminthosporium maydis
Helminthosporium carbonum
Helminthosporium sacchari


Q.19
Generally non-systemic fungicides are used in concentration of____________.
1 to 2 %
0.2 to 0.3%
2 to 4 %


Q.20
Crop rotation is recommended for the management of:___________.
Seed borne disease
Soil borne disease
Air borne disease


Q.21
Plant viruses are quickly transmitted by_______.
Aphids
Whitefly
All the above


Q.22
The pathogens which require living host for multiplication are known as______.
Biotrophs
Nectrotrophs
Both


Q.23
Which of the following growth regulator is involved in premature ripening of banana?
Ethylene
Auxins
Gibberellins


Q.24
Simple interest disease is___________.
Monocyclic
Polycyclic
Both


Q.25
In India, Destructive Insects and Pests Act passed in:___________.
1812
1914
1912

Number of score out of 25 = Score in percentage =


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