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Botany MCQS[NEET-2021 to 2022]-Plant Pathology - I
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1. Which of the following is odd one
Lance nematode = Pratylenchulus
Lesion nematode = Pratylenchulus
Sting nematode = Belonolaimus
Awl nematode = Dolichodorous
2. Didelphic means nematodes with which of the following ?
One ovary
Two ovaries
Three ovaries
None
3. Which among the following Spermatheca is found in the nematode body of?
Male
Female
A and B
None of these
4. A bacterium is devoid of
Chlorophyll
Well defined nucleus
Cell Wall
None
5. A virus particle with both nucleic acid and protein coat is called 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 which of the following ?
Nostoc
Macrocrocystis
Gelidium
Oscillatortia
8. Which of the following is a Albugo?
Obligate parasite
Facultative parasite
Saprophyte
Predator
9. Ryat is a which type of Parasite?
Obligate
Saprophyte
Facultative
Predator
10. Which of the following was discovered by Alexander Fleming (1929)
Tyrocidine
Streptomycetease
Penicillin
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
A and 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. Which of the following is the shape of Bacilli
Spiral shaped
Spherical shaped
Rod shaped
None of the above
16. Bacterial cell surrounded by which of the following flagella?
Monotrichous
Lophotrichous
Amphitrichous
Peritrichous
17. Brassicol is fungicide
Murcurious
Sulphur
Cu
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 which of the following?
Phytophthora infestans
Drechslera oryzae
Puccinia graminis tritici
Heterodera avenage
20. The deficiency of which of the following caused Black heart of potato
Boron
Zinc
Iron
Oxygen
21. Black stem rust of wheat caused by which among the following?
Puccinia graminis tritici
Puccinia recondita
Puccinia striformis
Ustilagotritici
22. Which of the following caused Black tip of mango ?
Phythium
Phytosynthetas
Boron deficiency
Zinc deficiency
23. Which of the following is the cause of Blast of rice?
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 which species
Bacillus
Pseudomonas
Agrobacterium
Clostridium
27. Brown spot of maize is caused by which among the following ?
Sclerospora sorghi
Physoderus zeamaydis
Alternaria solani
Cercospora perfonats
28. By 1857, Barkley and Schacht discovered root knot nematodes and cyst nematode in which of the following?
Sweet sorghum
Sugarcane
Potato
Sugarbeet
29. Carborundum powder is
Silicon carbide
Aluminium oxide
Diatomaceous earth
Calcium carbonate
30. The shaped of 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
6
8
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
More than one option is correct
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
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