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1. Pythium debaryanum is the causative agent of:

 
 
 
 

2. Which of the following is the most destructive enemies of mankind?

 
 
 
 

3. The disease symptom necrosis refers to :

 
 
 
 

4. When the seeds are borne on megasporophylls and are not enclosed in a fruit, the plant belongs to :

 
 
 
 

5. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

6. Multicellular and jacketed sex organs are found in :

 
 
 
 

7. Quarantine regulations are concerned with:

 
 
 
 

8. Which of the following causes smut disease in cultivated plants?

 
 
 
 

9. Liverworts are included in :

 
 
 
 

10. The plants with soft and delicate stems, about a meter tall are known as :

 
 
 
 

11. Rice, pea, potato are :

 
 
 
 

12. Which of the following is not a viral disease?

 
 
 
 

13. There is a class of phenolic compounds produced by the host plant in response to fungal infections :

 
 
 
 

14. Which of the following is not a correct match?

 
 
 
 

15. A control measure prior to the appearance of a particular disease comes under :

 
 
 
 

16. A plant which reproduces by spores, has vascular tissue but lacks flowers should belong to :

 
 
 
 

17. Propagating materials like seeds, tubers, grafts and bulbs can be kept free of pathogens by :

 
 
 
 

18. Ergot is obtained from :

 
 
 
 

19. A part of pathogen that is transmitted to the host is termed as :

 
 
 
 

20. Leaf spot of groundnut is caused by :

 
 
 
 

21. Ovules are not found enclosed in ovary in :

 
 
 
 

22. Cryptogams include :

 
 
 
 

23. The causal organism of early blight of potato is :

 
 
 
 

24. According to Woese, fungi were placed in the domain :

 
 
 
 

25. Leaves of pea show white powdery patches due to the growth of fungal mycelium with conidia and conidiophores. These are the symptoms of :

 
 
 
 

26. Severe famine of West Bengal of 1942-43 was due to destruction of rice crop by a fungus called :

 
 
 
 

27. An excessive enlargement of diseased organ because of increase in the number of cells is called :

 
 
 
 

28. The disease occurring more or less regularly from year to year in a particular locality is referred to as :

 
 
 
 

29. Which group of plants is called “Amphibians of Plant World”?

 
 
 
 

30. Banana bunchy top is caused by :

 
 
 
 

31. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

32. Most primitive embryophytes are placed in :

 
 
 
 

33. In plants, the substances which accumulate around the site of infection are :

 
 
 
 

34. Atracheata term has been used by Oswald Tippo for :

 
 
 
 

35. A branch of science that deals with nature, symptoms, development and control of plant diseases is called :

 
 
 
 

36. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

37. Club moss is the common name of :

 
 
 
 

38. The inability of a plant to resist the effects of a pathogen or any other damaging factors is known as :

 
 
 
 

39. Ovary is absent in :

 
 
 
 

40. In which of the following plants would you place heterotrophs like slime moulds, rusts, mushrooms, etc.?

 
 
 
 

41. Maximum diversity of life forms occurs in :

 
 
 
 

42. Vascular tissue is found in :

 
 
 
 

43. All but one group are included in tracheophyta; which group is this :

 
 
 
 

44. Which one of the following is a monocot?

 
 
 
 

45. When an infection is very wide in occurrence, it is called :

 
 
 
 

46. Seeds are characteristically found in :

 
 
 
 

47. Which of the following plants does not belong to Embryophyta?

 
 
 
 

48. Red rot of sugarcane is caused by :

 
 
 
 

49. The pathogen that causes covered smut of Sorghum is :

 
 
 
 

50. In which group would you place a plant that reproduces by spores, develops embryo but plant body remains undifferentiated into root, stem and leaves?

 
 
 
 

51. Chief constituents of bordeaux mixture are :

 
 
 
 

52. Oswald Tippo’s classification is:

 
 
 
 

53. Aflatoxin is produced as a product in :

 
 
 
 

54. Embryo formation is not known in :

 
 
 
 

55. Which of the following organisms has characters of both animals and plants?

 
 
 
 

56. Chemicals which are applied soon after the outset of infection, suppress the development of pathogen, thus curing the plant, are called :

 
 
 
 

57. Fruits are not found in :

 
 
 
 

58. Embryophyta includes :

 
 
 
 

59. Small epidermal swellings due to infection are called :

 
 
 
 

60. Who is known as ‘Father of Taxonomy’?

 
 
 
 

61. There are some dead and corky areas with definite margins on the stem, branches and fruits of lemon. This disease should be :

 
 
 
 

62. Smut of maize is caused by :

 
 
 
 

63. The tallest living gymnosperm tree in the world belongs to :

 
 
 
 

64. Mixed cropping helps :

 
 
 
 

65. Disease resistant plant varieties can be produced by :

 
 
 
 

66. Which are non-seed-bearing vascular plants?

 
 
 
 

67. Spermatophyta are characterized by producing:

 
 
 
 

68. Oswald Tippo’s classification was based on :

 
 
 
 

69. Club moss and Peat moss belong to:

 
 
 
 

70. Which of the following does not help in penetration of pathogen into the host?

 
 
 
 

71. Which among the following is a shrub?

 
 
 
 

72. Which of the following are included in Tracheophyta?

 
 
 
 

73. Black rust of wheat is caused by:

 
 
 
 

74. Which part of the plant is not affected by Albugo?

 
 
 
 

75. Which of the following is not a fungal disease?

 
 
 
 

76. A disease is abnormal state that may result due to :

 
 
 
 

77. The scientist who is famous for his research on rust fungi in India is :

 
 
 
 

78. Which of the following does not contain chlorophyll?

 
 
 
 

79. Which of the following is the kingdom of multicellular producers?

 
 
 
 

80. Downy mildew disease is caused by :

 
 
 
 

81. Red rot of sugarcane is caused by :

 
 
 
 

82. A plant bears fruit, has a column of vascular bundle and a tap root system. This plant is a :

 
 
 
 

83. Vascular cryptogam is the term used for :

 
 
 
 

84. Woody climbers are known as :

 
 
 
 

85. Etiology includes the study of :

 
 
 
 

86. Roots are absent in :

 
 
 
 

87. Which one of the following belong to cryptogams only:

 
 
 
 

88. Body disorders due to harmful physiological changes are known as :

 
 
 
 

89. Which of the following is a monocot?

 
 
 
 

90. Pteridophytes are also known as :

 
 
 
 

91. Which of the following statements is not correct?

 
 
 
 

92. The smut mycelium which initiates the infection is usually :

 
 
 
 

93. Bryophyta have been placed in cryptogams because:

 
 
 
 

94. Gymnosperms could also be called as:

 
 
 
 

95. Late blight of potato is caused by :

 
 
 
 

96. A diseased leaf shows some areas with dead tissue. This symptom is often referred to as :

 
 
 
 

97. A perennial that bears flowers and fruits once in a life time is known as :

 
 
 
 

98. Green plants are classified as :

 
 
 
 

99. Citrus canker is caused by :

 
 
 
 

100. When a diseased plant is legally stopped from export, this is done under :

 
 
 
 

101. If a disease appear on large scale after a long interval it is :

 
 
 
 


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