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1. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

3. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

6. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

8. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

12. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

14. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

16. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

20. Citrus canker is caused by :

 
 
 
 

21. Which of the following does not contain chlorophyll?

 
 
 
 

22. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

25. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

27. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

30. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

32. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

34. Rice, pea, potato are :

 
 
 
 

35. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Fruits are not found in :

 
 
 
 

39. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

41. Ovary is absent in :

 
 
 
 

42. Maximum diversity of life forms occurs in :

 
 
 
 

43. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

47. Disease resistant plant varieties can be produced by :

 
 
 
 

48. Pythium debaryanum is the causative agent of:

 
 
 
 

49. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

52. Aflatoxin is produced as a product in :

 
 
 
 

53. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

54. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Embryophyta includes :

 
 
 
 

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

 
 
 
 

60. Club moss and Peat moss belong to:

 
 
 
 

61. Vascular tissue is found in :

 
 
 
 

62. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

64. Red rot of sugarcane is caused by :

 
 
 
 

65. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

67. Vascular cryptogam is the term used for :

 
 
 
 

68. Etiology includes the study of :

 
 
 
 

69. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. Roots are absent in :

 
 
 
 

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

 
 
 
 

74. Liverworts are included in :

 
 
 
 

75. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

78. Club moss is the common name of :

 
 
 
 

79. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

82. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

84. Seeds are characteristically found in :

 
 
 
 

85. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

88. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

90. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

92. Green plants are classified as :

 
 
 
 

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

 
 
 
 

94. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

96. Cryptogams include :

 
 
 
 

97. Woody climbers are known as :

 
 
 
 

98. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

100. Pteridophytes are also known as :

 
 
 
 

101. Which of the following is a monocot?

 
 
 
 


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