ARO_Plant Pathology_12th Feb 2016_Morning

Sn
Ques
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1
"Plant pathology" deals with the study
Causal organism and management
Causal organism and disease cycle
Disease cycle and management
Causal organism, disease cycle and management of pant diseases

2
Factors responsible for disease occurrence
Host and pathogen
Susceptible host and pathogen
Susceptible host ,virulent pathogen and favorable environment
Susceptible host and virulent pathogen

3
The first book on plant pathology, entitled "Diseases of Cultivated Crops, their causes and their control" was written by
Kuhn
Tillet
De Bary
Micheli

4
The journal "Phytopathology" was begin to published in the year
1891
1895
1911
1918

5
In 1963 concept of vertical and horizontal resistance was given by
Eriksson
Orton
Stakman
Vanderplank

6
Gene for gene theory H.H. Flor worked with the rust of
Wheat
Barley
Linseed
Pea

7
Cedar-apple rust is caused by
Hemileia vastatrix
Melampsora lini
Uromyces appendiculatus
Gymnosporangium juniperi-virginianae

8
Mushrooms belongs to order
Agaricales
Exobasidiales
Uredinales
Ustilaginales

9
Generalized loss of turgidity and drooping of leaves or shoots are the symptoms of
Rust
Smut
Wilt
Mildew

10
Slima molds belongs to phylum
Myxomycota
Zygomycota
Oomycota
Ascomycota

11
Late blight of tomato is caused by
Phytophthora cactorum
Phytophthora cambivora
Phytophthora infestans
Phytophthora citrophthora

12
Special structures " rhizoids" are produced in the fungus:-
Aspergillus
Penecillium
Mucor
Rhizopus

13
Downy mildew of grapes is caused by
Plasmopara halstedii
Plasmopara viticola
Peronospora destructor
Peronospora effusa

14
The fungi, causing powdery mildews,
Obligali parasites
Facultative parasites
Obligate saprophytes
Facultative saprophytes

15
"Sigatoka disease" of banana is caused by
Mycosphaerella fragariae
Mycosphaerella musicola
Mycosphaerella citri
Magnaporthe grisea

16
Smut of bajara is
Seed borne
Soil borne
Air borne
Seed and soil borne

17
"Whip smut" of sugarcane is caused by
Ustilego scitaminea
Ustilego nuda
Ustilego maydis
Ustilego hordei

18
Heterocious nature of stem rust of wheat was demonstrated by
Antom De Bary
Eriksson
stakman
Craigie

19
Long smut of sorghum is caused by
Sphacelotheca cruenta
Sphacelotheca reiliana
Sphacelotheca sorghi
tolyposporium ehrenbergii

20
In black rust of wheat zero stage of fungus is known as
Basidial
Uredial
Telial
Pycnidial

21
Which one is poisonous mushroom
Pleurotus
Agaricus
volvariella
Amnita

22
"Mycorrhiza" is the association of
Fungi and Higher plants
Fungi and Algae
Fungi and Bacteria
Fungi and Insects

23
"Lichens" shows which type of association
Symbiosis
Commensalism
Synergism
Antibiosis

24
The smallest pathogenic agent
Virus
viroid
Virusoid
Prion

25
Filters used in Laminar air flow are known
HEPA -filters
Asbestos-filters
Porcelin-filters
Sintered glass filters

26
The "Quarantine laws" in USA were first enacted in
1896
1912
1950
1972

27
"Grassy shoot" disease of sugarcane is caused by
Fungi
Bacteria
Phytoplasma
Virus

28
L-form bacteria do not possess:-
Cell membrane
Cell wall
Mesosome
Ribosome

29
Which bacterium is a flagellate:-
Pseudomonas
Xanthomonas
Agrobacterium
Xylella

30
Typical "stem-pitting symptoms are produced in the disease:-
Citrus exocortis
Citrus tristeza
Citrus greening
Citrus canker

31
Alternate host of Bajra rust is
Tomato
Pea
Brinjal
Chilli

32
The conversion of whole thallus into reproductive structure, is called:-
Holocarpic
Eucarpic
Endocarpic
Mesocarpic

33
Counter stain for gram positive bacteria
Crystal violet
Iodine
Saffranin
cottan blue

34
Minimum magnification power of "Electron microscope" is
100 times
1000 times
10000 times
100000 times

35
The enlargement of host tissues due to excess cell division is called
Hyperplasia
Hypertrophy
Hypoplasia
Hypotrophy

36
Dispersal of plant pathogens through wind is known
Hydrochory
Zoochory
Anemochory
Anthorochory

37
Browning of vascular bundles occurs in the disease
Wilt
Smut
Rust
Bunt

38
Sterilization of culture medium in done at a pressure of
10 psi
15 psi
20 psi
25 psi

39
Van Everdingen (1933) evolved "Dutch rules" for the fungus
Puccinia striiformis
Albygo candida
Phytophthora infestans
Pythium debaryanum

40
"Indian type culture collection" for fungi is located at
Kolkata
Hyderabad
New Delhi
Mumbai

41
" Striga" is a plant parasite:-
Total stem parasite
Total root parasite
Partial stem parasite
Partial root parasite

42
"Pyricularin" is produced by the fungus
Pyricularia oryzae
Fusarium oxysporum
Helminthosporium maydis
Helminthosporium victorae

43
Fastidious vascular bacteria are mainly restricted to the region
Epidermis
Vascular bundles
Cortex
Pith region

44
First plant pathogenic nematode was discovered by
Needham
Cobb
Kuhn
Devaine

45
Bengal famine is related with the crop:-
Wheat
Paddy
Potato
Maize

46
Pycnia with acervuli production is the feature of class:-
Hyphomycetes
Coelomycetes
Blastomycetes
Pyrenomycetes

47
The ratio of copper sulphate and ammonium sulphate in "Cheshunt" compound
2:11
3:11
5:11
10:11

48
Coenocytic mycelium is present in fungus
Phytophthora
Ustilago
Puccinia
Alternaria

49
Naked asci are produced in the class
Discomycetes
Pyrenomycetes
Plectomycetes
Hemiascomycetes

50
First produced systemic fungicide is
Bordeaux mixture
Captan
Thiram
Carboxin

51
Parasexuality phenomenon was first observed in the fungus
Aspergillus nidulans
Aspergillus flavus
Aspergillus niger
Penicillium notatum

52
The perfect stage of Helminthosporium is
Thanatephorus
Mangnaporthe
Cochliobolus
Talaromyces

53
Leaf smut of rice is caused by
Entyloma oryzae
Urocystis tririci
Ustilego tririci
Ustilego nuda

54
The total stem parasite is
Loranthus
Orobanche
Striga
Cuscuta

55
The cause of "black heart" disease of potato is
Water stress
Frost injury
High light intensity
Lack of oxygen

56
The disease which takes more than one year to complete the disease cycle is known as
Polyetic
Monocyclic
Polycyclic
Demicyclic

57
Tundu disease of wheat is caused by Clavibacter with nematode:--
Anguina tritici
Meloidogyne graminicola
Heterodera avenae
Ditylenchus angustus

58
Viruses are mainly transmitted by
Insects
Fungi
Bacteria
Nematodes

59
The term "Boom Burst cycle" for disease resistance was given by
Flor
Priestley
Prusiner
Voinnet

60
First resistance gene cloned and sequenced in 1992 from maize is
Hm 1
Cf 9
Pt 0
Xa 21

61
Mycorohiza supplies which nutrient in the plants
Iron
Sulphur
Phosphorus
Nitrogen

62
Pasteurization is done at temperature:-
62.8 °C
80.0 °C
90.7 °C
100.0 °C

63
The perfect stage of Aspergillus is
Erotium
Thanetophorus
Glomerella
Gibberella

64
"Khaira disease " of rice is caused by deficiency of
Nitrogen
Zinc
Potash
Phosphorus

65
The organisms lacking a well defined nucleus are known
Fungi
Protozoa
Eukaryotes
Prokaryotes

66
Conidia and sporangia are produced by
Viruses
Fungi
Bacteria
Phytoplasma

67
Solar heat treatment for the control of loose smut of wheat was given by
Jensen
Mitra
Butler
Luthra and Sattar

68
Which toxin is host specific:--
Tabtoxin
Tentoxin
Victorin
Phaseotoxin

69
Peach leaf curl disease is caused by
virus
Bacterium
Fungus
Phytoplasma

70
"Kresek phase" symptoms found in
Latiblight of patato
Black arm of cotton
Bacterial leaf blight of rice
Moko disease of banana

71
Club root disease of cabbage was first reported by
N.A.Cobb
E.J.Butler
Woronin
K.C.Mehta

72
Tungo disease of rice is caused by
Bacteria
Fungi
Virus
Phytoplasma

73
Eriophyde mite is transmitting
Little leaf of brinjal
Bunchy top of banana
Sterility mosaic of pigeon pea
citrus greening

74
Phytoplasma contains
Only RNA
Only DNA
Both RNA and DNA
Only protein coat

75
Red leaf of cotton is a deficiency disease due to
Copper
Iron
Boron
Nitrogen

76
Ooze test is the diagnostic test for
Bacteria
Virus
Nematode
Fungi

77
Match the correct of the followingImperfect Stage Perfect StageA. Aspergillus a. MycosphaerellaB. Cercospora---- b. CochliobolusC. Cercospora----- c. GlomerellaD. Eurotium





78
The two important compounds of cell wall in most of the fungi are
Glucan and cellulose
Peptidoglycan and cellulose
Chitin and cellulose
Peptidoglycan and Chitin

79
Some pathogens secrete an iron chelating agent known as
P.R.Proteins
Siderophores
Phytoalexins
Elicitors

80
Which Fungicide is specific for downy mildew fungi
Chlorothalonil
Plantvax
Metalaxyl
Vitavax

81
An example of compound interest disease is
Wilt of gram
Root rot of cotton
Stem rust of wheat
Club root of cabbage

82
Local and systemic both infection are found in
Covered smut of barley
Karnal bunt of wheat
White rust of Mustard
Black rust of wheat

83
Virus is transmitted by which nematode?
Globodera
Meloidogyne
Heterodera
Xiphinema

84
Which of the following fungi is called weed of the laboratory?
Fusarium solani
Cercospora personata
Pyricularia oryzae
Aspergillus niger

85
Characteristic H-shaped structure of primary sporidia is found in
Neovossia
Ustilago
Sphaerotheca
Tilletia

86
White one is commonly known as grey mold fungus?
Penicillium italicum
Penicillium notatum
Botrytis cinerea
Aspergillus niger

87
Gossypium arboreum species of cotton are found resistant against disease
Root rot
Wilt
Bacterial leaf blight
Leaf curl

88
In which of the following fungi zoospores are formed inside vesicle?
Phytophthora
Phythium
Rhizoctonia
Albugo

89
Taphrina maculans causes the disease
Leaf spot of turmeric
Tikka of groundnut
Powdery mildew of pea
Wilt of pigeon pea

90
Perithecia with single ascus and simple appendages are found in the genus
Erysiphe
Uncinula
Sphaerotheca
Podosphera

91
Coffee rust was first reported in 1868 from:-
Brazil
Ceylon
India
Indonesia

92
Which is of the following fungi is commonly known as white mold/stem rotting:-
Rhizoctonia solani
Sclerotinia sclerotiorum
Fusarium solani
Albugo candia

93
Red onion is resistant to smudge due to presence of
Phenolic contents
Catechol and protocatechuic acid
Cholorogenic acid
Wax

94
Anthracnose of grapes is caused by
Elsinoe ampelina
Greenaria viticola
Plasmopara viticola
Uncinula necator

95
The symbiont bacterial genus is
Xanthomonas
Clavibacter
Bacillus
Rhixzobium

96
On culture media, mycoplasmal colonies appear as
Rod shaped
Helical
Spiral
Fried-egg appearance

97
Tomato leaf curl virus is transmitted
Myzus persici
Bemisia tabaci
Thrips tabaci
Infected plant material

98
Match the correct of the following A. Potassium dichromate FixativeB. Agar-agar Cleaning solution C. Lectophenol----(c). Mounting mediumD. Formalin acetic agent





99
Stem galls of coriander is caused by
Fusarium
Alternaria
Protonaria
Cercospora

100
Which among the following is commonly known as oyster mushroom?
Volvariela
Agaricus
Pleurotus
Lentinus

ARO_Plant Pathology_12th Feb 2016_Morning

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