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

 
 
 
 

2. Pythium debaryanum is the causative agent of:

 
 
 
 

3. Vascular cryptogam is the term used for :

 
 
 
 

4. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

8. Which of the following statements is not correct?

 
 
 
 

9. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

12. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

15. Embryophyta includes :

 
 
 
 

16. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

20. Oswald Tippo’s classification is:

 
 
 
 

21. Green plants are classified as :

 
 
 
 

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

 
 
 
 

23. Red rot of sugarcane is caused by :

 
 
 
 

24. Rice, pea, potato are :

 
 
 
 

25. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

26. Ergot is obtained from :

 
 
 
 

27. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

29. Red rot of sugarcane is caused by :

 
 
 
 

30. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

33. Which of the following is a monocot?

 
 
 
 

34. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

36. Chief constituents of bordeaux mixture are :

 
 
 
 

37. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

39. The disease symptom necrosis refers to :

 
 
 
 

40. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. Quarantine regulations are concerned with:

 
 
 
 

45. Club moss and Peat moss belong to:

 
 
 
 

46. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. Liverworts are included in :

 
 
 
 

52. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

55. Ovules are not found enclosed in ovary in :

 
 
 
 

56. Fruits are not found in :

 
 
 
 

57. Club moss is the common name of :

 
 
 
 

58. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

60. Bryophyta have been placed in cryptogams because:

 
 
 
 

61. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

65. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

67. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

70. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

74. Gymnosperms could also be called as:

 
 
 
 

75. Ovary is absent in :

 
 
 
 

76. Leaf spot of groundnut is caused by :

 
 
 
 

77. Oswald Tippo’s classification was based on :

 
 
 
 

78. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

81. Small epidermal swellings due to infection are called :

 
 
 
 

82. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

84. Etiology includes the study of :

 
 
 
 

85. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

92. Cryptogams include :

 
 
 
 

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

 
 
 
 

94. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

96. Late blight of potato is caused by :

 
 
 
 

97. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

99. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

101. Maximum diversity of life forms occurs in :

 
 
 
 


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