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Agriculture Plant Pathology Set-1
Choose a topic to test your knowledge and improve your Agriculture skills
1. Choose the odd one:
Lance nematode = Pratylenchulus
Lesion nematode = Pratylenchulus
Sting nematode = Belonolaimus
Awl nematode = Dolichodorous
2. Didelphic means nematodes with:
One ovary
Two ovaries
One testis
Two testis
3. Spermatheca is found in the nematode body of:
Male
Female
Both (a) & (b)
None of the above
4. A bacterium is devoid of:
Chlorophyl
Well defined nucleus
Cell wall
Both (a) & (b)
5. A virus particle with both nucleic acid and protein coat is known as:
Virion
Viriod
Capsid
All above
6. Agallol is used for:
Seed treatment
Soil treatment
Crop spray
Aerial spray
7. Agar-agar is produced from:
Nostoc
Macrocrocystis
Gelidium
Oscillatortia
8. Albugo is a:
Obligate parasite
Facultative parasite
Saprophyte
Predator
9. Ryat is a:
Obligate parasite
Saprophyte parasite
Facultative parasite
Predator
10. Alexander Fleming (1929) discovered:
Streptomycetease
Penicillin
Tyrocidine
Giseofulvin
11. Alternate host of black stem rust of wheat:
Mohania
Thalictrum
Barberry
All above
12. Anterior tinsel flagellum is characteristics of:
Chytridiomycetes
Hypochytridiomycetes
None of these
Both (a) & (b)
13. Association of fungi with roots of higher plants is known as:
Lichen
Mycorrhiza
Ascolichen
Basidiolichen
14. _______ proposed a classification of fungi which is now widely accepted:
Walker (1957)
Stakman & Harrar (1957)
Whittaker (1969)
Ainsworth (1973)
15. Bacilli are:
Spiral shaped
Spherical shaped
Rod shaped
None of the above
16. Bacterial cell surrounded by flagella is called:
Monotrichous
Lophotrichous
Amphitrichous
Peritrichous
17. Brassicol is _____ fungicide:
Murcurious
Sulphur
Copper
Miscellaneous
18. Bacterial leaf blight of rice caused by Xanthomonaso ryzae can be identified by:
Wilting of the plant
Yellowing of leaves
Ooze test
Defoliation
19. Bengal famine was caused due to:
Phytophthora infestans
Drechslera oryzae
Puccinia graminis tritici
Heterodera avenage
20. Black heart of potato is caused due to deficiency of:
Boron
Zinc
Iron
Oxygen
21. Black stem rust of wheat caused by:
Puccinia graminis tritici
Puccinia recondita
Puccinia striformis
Ustilagotritici
22. Black tip of mango is caused by:
Phythium
Phytosynthetas
Boron deficiency
Zinc deficiency
23. Blast of rice is caused:
Xanthomonas
Drechslera oryzae
Pyricularia
Cercospora
24. Plant Pathology is ____ word.
English
Latin
Greek
Mandarin
25. Bordeaux mixture was discovered by P.A. Millardet of France during the year 1882 following his chance observation of farmers practice for protection against:
Plasmopara viticola on grapevine
Uncinula nectar on grapevine
Podosphaera leucotricha on apple
Venturia inequalis on apple
26. Botulism is caused by species of:
Bacillus
Pseudomonas
Agrobacterium
Clostridium
27. Brown spot of maize is caused by:
Sclerospora sorghi
Physoderus zeamaydis
Alternaria solani
Cercospora perfonats
28. By 1857, Barkley and Schacht discovered root knot nematodes and cyst nematode in:
Sweet sorghum
Sugarcane
Potato
Sugarbeet
29. Carborundum powder is:
Silicon carbide
Aluminium oxide
Diatomaceous earth
Calcium carbonate
30. Cocci are:
Spiral shaped
Spherical shaped
Rod shaped
None of the above
31. Coffee rust is caused by:
Uromyces hobsoni
Hemileia vastatrix
Cronartium ribicola
Ravenelia-emblicae
32. Conidia and sporangia are the spores produced by:
Bacteria
Viruses
Fungi
Phanerogams
33. Crystalization of viruses has done by:
Mayer
Stanley
Iwanowski
Bejerinck
34. Cysts are formed by:
Meloidogyne
Aphelenchoides
Heterodera
None of the above
35. Death of tissue in virus infected plant described as:
Mottling
Mosaic
Necrosis
Curling
36. Disease symptoms known as phyllidy in sesamum are caused by:
Bacterium
Fungus
MLO
Virus
37. Dithane M-45 is a:
Bactericide
Insecticide
Fungicide
Nematicide
38. Domestic quarantine exists on:
Rice blast
Red rot of sugarcano
Wart of potato
Run of wheat
39. Downy mildew of maize is caused by:
Peronosclerspora sacchari
Peronospora triognella
Sclerospora graminicola
Sclerospora sacchari
40. Whittaker (1969) proposed a kingdom System of Classification of Micro-organism:
4
5
16
18
41. Exclusion of plant disease by legislation is known as:
Disease resistance
Plant quarantine
Biological control of plant
Cultural control
42. First of all microscope discovered by:
Needham
Spallanzani
Leeuwenhoeck
Koch
43. First plant parasitic bacteria was reported by:
T.J. Burrill
Needham
Louis Pasteur
Leeuwenhoek
44. First plant parasitic nematode discovered was:
Meloidogyne
Heterodera
Anguina
Globodera
45. First plant parasitic nematode was reported by:
Needham
Spallanzani
Cobb
Mayer
46. Flag smut of sweat could be controlled by:
Seed treatment with vitavax
Spraying with vitavax
Soil application with vitavax
Above all
47. Flag smut of wheat is caused by:
Ustilago tritici
Urceystis trlttct
Ustilago hordet
Taphrina deformans
48. Foot rot of papaya is caused by:
Phytophthora palmivora
Pythium aphanidermatum
Peronospora parasitica
Albugo candida
49. Fungi, which can grow on living host plant, are called:
Obligate saprophyte
Obligate parasite
Facultative parasite
Saprophytes
50. Fungi which can grow only on living host plant are called:
Obligate saprophytes
Obligate parasites
Facultative parasites
Saprophytes
51. Fusarium belong to order:
Melaconiales
Moniliales
Sporobolomycetales
Cryptococcales
52. Gelatin plate technique was discovered by:
Burrill
Fanny Hesse
Robert Koch
Louis Pasteur
53. Genus Radopholus of nematode was first described in 1893 on the basis of a male specimen obtained from necrotic roots of _____ growing in Fiji Islands.
Sugarbeet
Sugarcane
Banana
Coconut
54. Heterocious nature of rust means:
A fungus require one host species to complete life cycle
A fungus require two different host species to complete life cycle
Both (a) & (b)
None of the above
55. Heterodera belongs to super family:
Atylenchoidea
Neotylenchoidea
Tylenchoidea
Heteroderoidea
56. Wrong information about Powdery mildew is:
Subdivision = Ascomycotina
Order = Erysiphales
Family = Melanconiaceae
All of the above
57. How much quantity of nematicide is used to control the nematodes in one hectare are?
10 - 15 kg
20 - 25 kg
50 - 60 kg
100 - 200 kg
58. In bacterial brown rot and wilt of potato the amount of _____ produced by pathogens are proportional to severity of symptoms:
Gibberellins
Lipids
Polysncchnride
Proteins
59. In fermentation industry, pasteurization is done at _____ temperature:
90.77C
100.07C
62.87C
80.07C
60. Dry root rot of legumes and beans is caused by:
Erysiphe
Macrophomina
Xanthomonas
Phacidiopycnis
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