Plant Pathology MCQ For Competitive Exam – 96

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1. Irish famine (1845) was associated with…….

(a) Brown leaf spot of paddy

(b) Late blight of tomato

(c) Late blight of potato

(d) Early blight of potato

2. Bengal famine(1942) was associated with…….

(a) Late blight of potato

(b) Brown leaf spot of paddy

(c) Bacterial blight of rice

(d) Blast of rice

3. Aspergillus flavus produce toxin is …..

(a) Fumitoxin

(b) Aflatoxin

(c) Ergotoxin

(d) Tabtoxin

4. Ergotin produced by …

(a) Aspergillus niger

(b) Aspergillus flavus

(c) Claviceps purpurea

(d) Fusarium moniliforme

5.. Late blight of potato was associated with ….

(a) Bengal famine

(b) Irish famine

(c) Russian famine

(d) British famine

6. The area under coffee has been occupied by tea in Ceylon due to ……..
disease.

(a) Rust

(b) Blister blight

(c) Smut

(d) Downy mildew

7. The Founder and Father of Mycology is……

(a) P.M.A.Millardet

(b) P.A.Micheli

(c) E.J.Butler

(d) Anton de Bary

8. Bordeaux mixture discovered by…

(a) P.A.Micheli

(b) P. M. A. Millardet

(c) N. A. Cobb

(d) K. C. Mehta

9. Father of Plant Pathology in India is……

(a) K.C.Mehta

(b) N.A.cobb

(c) E.J.Butler

(d) Anton de Bary

10. First plant parasitic nematode (Ear cockle of wheat) was reported by……

(a) N.A.Cobb

(b) T.Needham

(c) E.J.Butler

(d) C.H.Persoon

11. Father of modern Plant Pathology….

(a) Anton de Bary

(b) M.K.Patel

(c) E.J.Butler

(d) P.A.Micheli

12. Father of American Nematology…..

(a) T.Needham

(b) N.A.Cobb

(c) E.J.Butler

(d) P.A.Micheli

13. Heteroecious nature of rust fungi was discovered by ….

(a) Anton de Bary

(b) M.K.Patel

(c) E.J.Butler

(d) P.A.Micheli

14. Solar heat treatment method for the control of loose smut of wheat was
given by

(a) M.K.Patel

(b) K.C.Mehta

(c) J.C.Luthra

(d) Flor

15. Theory of pasteurization was discovered by….

(a) E.F.Smith

(b) T.J.Burrill

(c) Robert Koch

(d) Louis Pasteur

16. The Father of Microbiology is….

(a) Robert Koch

(b) T.J.Burrill

(c) Anton Van Leeuwenhoek 

(d) Stakman

17. Tobacco mosaic virus disease was first reported by

(a) Adolf Mayer

(b) Louis Pasteur

(c) F.C.Badwan

(d) E.C.Stakman

18. Who got noble prize for pure crystalline form of TMV

(a) Bawden

(b) T.J.Burril

(c) W.M.Stanley

(d) M.W.Beijerinck

19. Who recorded wheat bunt disease and proved its contagious nature…..

(a) Tillet

(b) C.H.Persoon

(c) Prevost

(d) Ward

20. Name the Indian scientist who worked on black stem rust of wheat

(a) M.K.Patel

(b) R.Prasad

(c) K.C.Mehta

(d) J.C.Luthra

21. Who discovered sexuality in fungi…..

(a) Blackslee

(b) J.C.Walker

(c) E.C.Stakman

(d) Buller

22. Who discovered physiological races of pathogen

(a) E.C.Stakman

(b) Sadasivan T.S.

(c) J.G.Kuhn

(d) Oroton

23. Polymorphism nature in fungi was discovered by..

(a) K.C.Mehta

(b) Anton de Bary

(c) P.A.Micheli

(d) Tulasne Brothers

24. Who worked on breeding for disease resistance

(a) Ward

(b) Woronin

(c) W.M.Stanley

(d) J.C.Walker

25. Gene for gene hypothesis theory was given by

(a) Flor

(b) Oroton

(c) J.C.Walker

(d) Biffen

26. Which antibiotic was first time discovered by Fleming in 1929

(a) Streptomycin

(b) Penicillin

(c) Tetracycline

(d) Gliotoxin

27. Five kingdom system of classification was given by

(a) Whittaker

(b) Haeckel

(c) E.J.Butler

(d) T.Needham

28. “Nova Plantarum Genera” published by

(a) P.M.A.Millardet

(b) C.H.persoon

(c) P.A.Micheli

(d) Tulasne Brothers

29. “Synopsis methodica fungorum” published by

(a) P.M.A.Millardet

(b) C.H.Persoon

(c) P.A.Micheli

(d) Tulasne Brothers

30. “Selecta Fungorum Carpologia” published by

(a) P.M.A.Millardet

(b) C.H.persoon

(c) P.A.Micheli

(d) Tulasne Brothers

31. Who started Indian Phytopathological Society ,New Delhi ?

(a) E.J.Butler

(b) B.B.Mundkur

(c) M.K.Patel

(d) K.C.Mehta

32. Pathogen which requires two different hosts to complete its life cycle is
called

(a) Autoecious

(b) Heteroecious

(c) Polycyclic

(d) Monoecious

33. A fungal pathogen(particularly rust fungi) which completes its entire
life cycle on the same host is called …

(a) Autoecious

(b) Heteroecious

(c) Polycyclic

(d) Monocyclic

34. A Book “Fungi and Plant Disease” was written by…

(a) E.J.Butler

(b) E.C.Stakman

(c) B.B.Mundkur

(d) Oskar Brefeld

35. Alternate host of stem rust of wheat is …..

(a) Bajra

(b) Brinjal

(c) Barley

(d) Barberry

36. Binomial system of nomenclature was given by….

(a) Linnaeus

(b) Robert Hook

(c) Anton Van Leeuwenhoek

(d) Aristotle

37. Pathogenic nature of fungi was discovered by…..

(a) Tillet

(b) P.A.Micheli

(c) Prevost

(d) Woronin

38. Pure culture technique of fungi developed by….

(a) J.G.Kuhn

(b) Brefeld

(c) Prevost

(d) Ward

39. An agent causing disease in host tissues is….

(a) Pathogen

(b) Disease

(c) Saprophyte

(d) Parasite

40. A plant that is invaded by parasite and from which parasite obtain
nutrition is known as…

(a) Host

(b) Disorder

(c) Disease

(d) Pathogen

41. Any agent that depends on other for survival is called….

(a) Disease

(b) Disorder

(c) Host

(d) Parasite

42. Fungi living on only living host is known as ….

(a) Obligate parasite

(b) Facultative parasite

(c) Saprophyte

(d) Perthotrophs

43. An organism that uses dead organic material for food is known as…

(a) Biotrop

(b) Saprophyte

(c) Obligate parasite

(d) Parasite

44. Majority of fungi are ….

(a) Obligate parasite

(a) Facultative parasite

(c) Saprophyte

(c) Facultative saprophyte

45. A pathogen mainly parasitic on a plant may become saprophyte under
certain conditions for some times is called …..

(a) Obligate parasites

(b) Obligate saprophytes:

(c) Facultative saprophytes

(d) Facultative parasites

46. A pathogen mainly saprophyte on a dead organic matter may become
parasitic when suitable hosts become available under certain conditions for some times are called …..

(a) Obligate parasites

(b) Obligate saprophytes

(c) Facultative saprophytes

(d) Facultative parasites

47. Eukaryotic microorganism is…

(a) Phytoplasma

(b) Fungi

(c) Bacteria

(d) Virus

48. Prokaryotic organism is..

(a) Bacteria

(b) Fungi

(c) Algae

(d) Nematode

49. Unicellular microorganism is..

(a) Yeast

(b) Rhizopus

(c) Penicillium

(d) Mucor

50. Which organism does not have cell wall?

(a) Bacteria

(b) Yeast

(c) Phytoplasma

(d) Fungi

51. Viruses are…

(a) Obligate parasites

(b) Obligate saprophytes

(c) Facultative parasites

(d) All of them

52. An organism contain naked RNA…

(a) Bacteria

(b) Viroids

(c) Fungi

(d) Virus

53. Tobacco mosaic is caused by…

(a) Bacteria

(b) Virus

(c) Algae

(d) Fungi

54. Tobacco leaf curl disease is caused by…

(a) Bacteria

(b) Virus

(c) Algae

(d) Fungi

55. Yellow vein mosaic of okra disease is caused by…

(a) Bacteria

(b) Virus

(c) Algae

(d) Fungi

56. Papaya leaf curl disease is caused by…

(a) Bacteria

(b) Virus

(c) Algae

(d) Fungi

57. A virus particle is known as ……

(a) Virion

(b) Capsomer

(c) Viroids

(d) Capsid

58. Root – knot disease of vegetable crops is caused by …

(a) Nematode

(b) Fungi

(c) Algae

(d) Protozoa

59. Potato spindle tuber disease is caused by…

(a) Nematode

(b) Fungi

(c) Virus

(d) Viroids

60. Citrus canker disease is caused by…

(a) Virus

(b) Fungi

(c) Phytoplasma

(d) Bacteria

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