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

 
 
 
 

2. Disease resistant plant varieties can be produced by :

 
 
 
 

3. Chief constituents of bordeaux mixture are :

 
 
 
 

4. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

5. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

7. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. Multicellular and jacketed sex organs are found in :

 
 
 
 

14. Spermatophyta are characterized by producing:

 
 
 
 

15. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

17. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

20. Fruits are not found in :

 
 
 
 

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

 
 
 
 

22. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

25. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

27. Maximum diversity of life forms occurs in :

 
 
 
 

28. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

30. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

36. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

38. Late blight of potato is caused by :

 
 
 
 

39. Small epidermal swellings due to infection are called :

 
 
 
 

40. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

41. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

43. Woody climbers are known as :

 
 
 
 

44. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

46. The disease symptom necrosis refers to :

 
 
 
 

47. Club moss and Peat moss belong to:

 
 
 
 

48. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

52. Liverworts are included in :

 
 
 
 

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

 
 
 
 

54. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

56. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

58. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

61. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. Vascular cryptogam is the term used for :

 
 
 
 

65. Gymnosperms could also be called as:

 
 
 
 

66. Mixed cropping helps :

 
 
 
 

67. Cryptogams include :

 
 
 
 

68. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

69. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

71. Etiology includes the study of :

 
 
 
 

72. Banana bunchy top is caused by :

 
 
 
 

73. Citrus canker is caused by :

 
 
 
 

74. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

78. Embryo formation is not known in :

 
 
 
 

79. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

81. Black rust of wheat is caused by:

 
 
 
 

82. Ovary is absent in :

 
 
 
 

83. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

87. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

92. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

95. Red rot of sugarcane is caused by :

 
 
 
 

96. Red rot of sugarcane is caused by :

 
 
 
 

97. Which among the following is a shrub?

 
 
 
 

98. Roots are absent in :

 
 
 
 

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

 
 
 
 

100. Ergot is obtained from :

 
 
 
 

101. Most primitive embryophytes are placed in :

 
 
 
 


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