Asslamu Alikum friends’ Here I’m sharing PARC, NARC-Jobs, Agriculture Plant Pathology MCQs for Written Test-2024 for the Post of Scientific Officer and Assistant Scientific Officer Part-IV
1. The trade name of Chlorothalonil is
a) Daconil b) Emisan c) Glyodin d) Foltof
2. Curzate, a systemic fungicide is specific to
a) Downy mildew b) Powdery mildew c) Smuts d) Wilts
3. The primary source of inoculum for the stem and fruit canker of tomato is
a) Soil borne only b) Seed borne only c) Soil and seed-borne d) Airborne
4. The genome of Tomato leaf curl virus is
a) ss RNA b) ds RNA c) ss DNA d) ds DNA
5. A typical symptom of bird’s eye spot is caused by
a) Ralstonia solanacearum b) Xanthomonas camqestris sub spp. campestris c) X.c.pv. vgsicatoria d) Clavibacter michiganense suf sp. michiganense
6. The position of the antheridium in connection with the oogonia in Albugo is called as perigynous when the antheridium
a) grows beside the oogonium b) encircles the oogonium c) remains at the base of the oogonium d) grows on the oogonial wall
7. The centifolia effect is caused by to loss of
a) Horizontal resistance b) Vertical resistance c) Apparent resistance d) All
8. The fertile portion in the fruiting body of Lycoperdon is called
a) Gleba b) Peridium c) Hymenium d) Gills
9. Tomato mosaic is transmitted by
a) Aphids b) Seed c) Sap d) Both b and c
10. Little leaf of Brinjal is caused by
a) Phytoplasma b) Virus c) Viroid d) Bacteria
11. A fungus-causing wart of potatoes is
a) A saprophyte b) A facultative parasite c) A facultative saprophyte d) An obligate
12. A long flexuous filamentous ssRNA virus is
a) Potato virus X b) Cucumber mosaic virus c) Beet yellow virus d) Tomato mosaic virus
13. The fruiting body of Colletotrichum capsici is
a) Acervulus b) Perithecia c) Pycnidia d) Sporodochium
14. A toxic substance produced by Trichoderma viridae is
a) Gliovirin b) Viridin c) Subtilin d) Pseudobactin
15. The famous Irish famine occurred in the year
a) 1845 b) 1854 c) 1880 d) 1865
16. The resistant structure produced by Fusarium sp. is
a) Sclerotia b) Stroma c) Conidia d) Chlamydospores
17. Macrocyclic rust is the name given to some fungi,
a) which produces bigger spores b) where all the five spore stages are produced c) which completes its life-cycle on a single host d) which selects many hosts to complete its life cycle
18. The bacterial canker of tomatoes is caused by
a) Xanthomonas campestris.pv. vesicatoria b) X. campestris.pv.malvacearum c) Clavibacter michiganense sub sp. michiganense d) Ralstonia solanacearum
19. The indicator plant used for citrus greening
a) Kagzi lime b) Sweet orange c) Trifoliate orange d) Rangapur lime
20. The type of nucleic acid present in the yellow mosaic of Bhendi is
a) ss RNA b) ds RNA c) ss DNA d) ds DNA
21. Powdery mildew of chili is caused by
a) Erysiphe polygon b) Erysiphe cichoracearum c) Leveillula taurica d) Sphaerotheca fuliginia
22. Pea rust is caused by
a) Puccinia b) Uromyces c) Phakospora d) Urocystis
23. The local quarantine regulation for Katte disease of cardamom is prevalent in
a) Kerela b) Tamil Nadu c) Karanataka d) Maharastra
24. The black spot of the Rose is caused by
a) Cercospora sp b) Alternaria sp c) Diplocarpon sp. d) Colletotrichum sp.
25. A disease caused by Colletotrichum circulars in onion is
a) Black rot b) Soft rot c) Black mold d) Smudge
26. Fungi belonging to the order Ustilaginales are known to cause
a) Rusts b) Ergots c) Smuts d) All of these
27. A button-like structure which penetrates the host and draws nutrients
a) Rhizoid b) Appressorium c) Rhizomorph d) Haustoria
28. A plant viral disease of seed-borne nature
a) Potato virus b) Cassava virus c) Common bean mosaic virus d) TMV
29. A disease affecting food conduction in plant
a) Vascular wilt b) Root rots c) Sandal spike d) Soft rots
30. What is the fruit body of Penicillium called
a) perithecium b) cleistothecium c) apothecium d) stroma
31. Who was considered as the founder of virology?
a) W.M. Stanley b) Beijerinck c) T.O.Diener d) A.E.Mayer
32. Sporangia are produced in chains
a) Pythium b) Phytophthora c) Oidium d) Albugo
33. Ostiolate ascocarp is known as
a) Cleistothecium b) Perithecium c) Apothecium d) Ascostromata
34. A bacterial genus which enters through nectarines is
a) Psedomonas b) Xanthomonas c) Erwinia d) Bacillus
35. An endophytic powdery mildew genus having cleistothecial characters like indefinite
myceloid appendages
a) Microsphaera b) Sphaerotheca c) Phyllactinia d) Leveillula
36. A tuft of flagella on one or both ends is called
a) Amphitrichous b) Lophotrichous c) Peritrichous d) Monotrichous
37. Prokaryote without the cell wall
a) Bacteria b) Richetssia-like organisms c) Bacteria-like organisms d) Spiroplasma
38. Low molecular weight infectious RNA without a protein envelope is
a) Virusoid b) Virus c) Ca deficiency d) Viroid
39. Robigalia was celebrated by Romans against
a) Smuts b) Blights c) Rusts d) Both
40. The fungus which is so important for its use in genetic studies is
a) Aspergillus b) Rhizopus c) Penicillium d) Neurospora
41. A partial root parasite of trees
a) Sandal b) Cuscuta c) Striga d) Loranthus
42. Cross protection can be achieved by inoculating the plants first with
a) Attenuated strain b) Mild strain of the same virus c) Mild strain of different virus d) Severe strain
43. Use of antibiotics in plant disease control is by
a) G. Rangaswamy b) Coleman c) M.J.Thirumalachar d) J.C.Luthra
44. Highly contagious virus
a) Cucumber mosaic virus b) Tobacco mosaic virus c) Potato leaf roll virus d) Tomato leaf roll virus
45. A plant viral disease of seed-borne nature
a) Potato virus-X b) Cassava mosaic c) Both a and b d) None
46. Dikaryotic mycelium is a distinct feature of fungi belonging to
a) Ascomycotina b) Diplomastigomycotina c) Deuteromycotina d) Basidiomycotina
47. Bio-agents used in the management of airborne diseases
a) Trichoderma viridae b) Pseudomonas fluorescence c) Both a and b d) Trichoderma harzianum
48. Microconidia are found in
a) Claviceps b) Neurospora c) Rhizoctonia d) Pyricularia
49. Plant pathogenic bacteria having relevance in genetic engineering
a) Xanthomonas b) Agrobacterium c) Pseudomonas d) Erwinia
50. In Agaricus, the cell in which reduction division takes place is known as
a) basidiospore b) basidium c) chlamydospore d) None
PARC Jobs, NARC-Jobs, Agriculture Plant Pathology MCQs for Written Test-2024 for the Post of Scientific Officer and Assistant Scientific Officer Part-IV
51. Xanthomonas penetrates the host tissue through
a) Lenticels b) Stomata c) Root hairs d) Stigma
52. Reproduction in Basidiomycetous fungi is through
a) Spermatization b) Somatogamy c) a or b d) Both a and b
53. A practical and feasible method of managing soil borne diseases is through
a) Chemotherapy b) Crop rotation c) Biological control d) Use of disease-resistant varieties
54. A systemic fungicide is
a) Copper oxychloride b) Hexacanozole c) Dinocap d) Carbendazim
55. Stroma is
a) compact somatic hyphae with fruit bodies b) a group of spores c) loosely interwoven hyphae d) a small hyphal branch
56. All plant pathogenic bacteria are
a) Facultative saprophytes b) Facultative parasites c) Obligate parasites d) Perthrotrophs
57. A culturable cell wall-less fastidious prokaryote causing plant diseases is
a) Richetssia-like organisms b) Phytoplasma c) Spiroplasma d) Bacteria-organism
58. Mycelium of class Oomycetes is always
a) Coenocytic b) Septate c) Cross septa d) None
59. The nuclear position of redial stage in rust fungi is
a) n b) 2n c) n+n d) None
60. Streptomycin sulfate, an antibiotic was isolated by
a) Rangaswami b) Millardet c) Waksmann d) Thirumalachar
61. Tur wilt is caused by
a) Sclerotium rolfsii b) Rhizoctonia solani c) Fusarium udum d) Fusarium oxysporum fsp. cubense
62. Race-specific resistance is called
a) Vertical resistance b) Horizontal resistance c) Adult plant resistance d) Apparent resistance
63. L.C.Coleman was a general pathologist during 1914 but worked and suggested
control measures for
a) Koleroga of Areca b) Tur wilt c) Late blight of potato d) Blister blight of Cocoa
64. Exobasidium vexans which causes
a) Blight of coffee b) Blister blight of tea c) Blister blight of Cocoa d) Red rust of tea
65. Early blight of potato and tomato caused by
a) Alternaria solani b) Alternaria alternata c) Alternaria helianthi d) Alternaria tenuis
66. Downy mildew causing pathogens, powdery mildew causing pathogens and
rust causing pathogens are
a) Obligate parasites b) Facultative saprophytes c) Obligate saprophytes d) Facultative parasites
67. The phanerogamic parasite with the Sorghum crop
a) Striga b) Orobanche c) Loranthus d) Cuscuta
68. Teliospores are single celled, papillate and stalked, the genus identified as
a) Puccinia b) Phragmidium c) Uromyces d) Hemilia
69. One of the chemical weapons secreted by the pathogen in production of disease in plants
a) Pathogen related proteins b) Phytotoxins c) Phytoalexins d) Toxins
70. The word virus mean
a) Toxin b) Enzyme c) Posion d) Antibiotic
71. Conidia are produced singly at the tips of conidiophores by
a) Uncinula spp b) Leveillula c) Erysiphe spp d) Microsphaera spp.
72. When plant shows the partial resistance against all the races of pathogen then it is a type of:
a) Horizontal resistance b) Vertical resistance c) Induced resistance d) Non-host resistance
73. The teliospore of coffee leaf rust pathogen is
a) Turnip shaped b) Bean shaped c) Sickle-shaped d) dumbbell-shaped
74. Which one of the following cannot be detected by the ELISA technique?
a) Virus b) Bacteria c) Viroid d) Fungus
75. Viruses are
a) Purely protein b) Purely nucleic acids c) Nucleoproteins d) None of these
76. Bacteriophages were discovered by
a) F.Towort b) Felix d Herelle c) Beijernick d) a&b
77. In a long-cycled rust, the “0” stage refers to
a) Aecium b) Uredium c) Pycnium d) Basidium
78. Who is known as the Father of virology
a) Adolf Mayer b) M.W. Beijernick c) D.Ivanowaski d) Stanley
79. Virus know during the 17th century in Europe
a) Tulip color break b) TMV c) CMV d) SMV
80. Viruses that replicate by reverse transcription
a) CaMV b) TMV c) Begomo virus d) Poty virus
81. Banana Streak Virus is transmitted by
a) Mealybug b) Thrips c) Whitefly d) Mite
82. Viruses which have ORFs that may be translated into proteins in both directions
a) Begomoviruses b) Potyviruses c) Tobamoviruses d) Cucumoviruses
83. The protein content in a bacterial cell on dry weight basis is
a) 15 % b) 60 % c) 95 % d) 45%
84. All Reo viruses causes galls expect
a) Wound Tumour virus b) Rice gall dwarf virus c) Rice dwarf virus d) None
85. The most widely used granulated formulations have granule size of
a) 0.1 to 1 mm b) 0.2 to 1 mm c) 0.3 to 1 mm d) 0.4 to 1 mm
86. The additive chemicals which possess surface modifying properties are called as
a) Wetting agents b) Spreaders c) Penetrants d) Surfactants
87. Components of Chestnut compound are 1) Copper sulphate 2) Ammonium carbonate 3) washing soda 4) Quick lime
a) 1 only b) 1 and 2 only c) 1, 2 and 3 only d) All the above
88. The great Bengal famine in 1943 was due to
a) Paddy blast b) Brown leaf spot of Rice c) Bacterial leaf blight d) Rice tungro
89. Phytoalexin inducers viz ferric chloride, nickel nitrate etc., offer protection against
a) Blast b) Rice tungro c) Brown leaf spot d) Bacterial leaf blight
90. False smut of Rice is caused by
a) Neovossia horrida b) Entyloma oryzae c) Ustilago scitaminae d) Ustilaginoidea virens
91. The causal agent of foot rot or Bakane disease of rice produces
a) Gibberellic acid b) Fusaric acid c) Both d) None
92. Red rot of Sugarcane is caused by
a) Colletotrichum falcatum b) Acremonium sp c) Leptosphaera sacchari d) Drechslera sacchari
93. The causal agent of Grassy shoot disease in sugarcane is caused by
a) Bacterium b) Virus c) Phytoplasma d) Vascular fungi
94. Stunting disease of sugarcane is caused by
a) Clavibacter xyli subsp.xyli b) Corynebacterium michiganense c) Fusarium sacchari d) Mycoplasma
95. Soil drenching with 0.4% bleaching powder is effective in reducing
a) Leaf scald b) Wilt c) Red rot d) Smut
96. Bacterial blight or black arm of cotton is incited by
a) Xanthomonas campestris pv. citri b) X. campestris pv.malvacearum c) Xanthomonas campestris pv. campestris d) Xanthomonas campestris pv.oryzae
97. Sudden and complete wilting in cotton is due to
a) Root rot by Rhizoctonia solani b) Root rot by Rhizoctonia bataticola c) Both d) Vascular wilt
98. Apple scab is caused by
a) Podosphaera leucotricha b) Spilocema pomi c) Venturia inaequalis d) Armillaria mellea
99. Citrus exocartis is transmitted through
a) Infected bud wood b) Budding knife c) Seed d) Both knife and bud wood
100. Largest enveloped viruses
a) TSWV b) TMV c) Closterovirus d) Potyviruses