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

 
 
 
 

2. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

4. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

6. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

8. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Oswald Tippo’s classification was based on :

 
 
 
 

12. Vascular cryptogam is the term used for :

 
 
 
 

13. Red rot of sugarcane is caused by :

 
 
 
 

14. Which of the following are included in Tracheophyta?

 
 
 
 

15. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

17. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

20. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

22. Fruits are not found in :

 
 
 
 

23. Black rust of wheat is caused by:

 
 
 
 

24. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

27. Liverworts are included in :

 
 
 
 

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

 
 
 
 

29. Small epidermal swellings due to infection are called :

 
 
 
 

30. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

32. Embryo formation is not known in :

 
 
 
 

33. Aflatoxin is produced as a product in :

 
 
 
 

34. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

39. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

40. Red rot of sugarcane is caused by :

 
 
 
 

41. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

48. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

50. Chief constituents of bordeaux mixture are :

 
 
 
 

51. Maximum diversity of life forms occurs in :

 
 
 
 

52. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

60. Green plants are classified as :

 
 
 
 

61. Most primitive embryophytes are placed in :

 
 
 
 

62. Citrus canker is caused by :

 
 
 
 

63. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

65. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

67. Smut of maize is caused by :

 
 
 
 

68. Which of the following is a monocot?

 
 
 
 

69. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

71. Leaf spot of groundnut is caused by :

 
 
 
 

72. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

74. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

77. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

80. Ovary is absent in :

 
 
 
 

81. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

84. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

86. Roots are absent in :

 
 
 
 

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

 
 
 
 

88. Club moss and Peat moss belong to:

 
 
 
 

89. Pythium debaryanum is the causative agent of:

 
 
 
 

90. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

92. Club moss is the common name of :

 
 
 
 

93. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

97. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

98. Which among the following is a shrub?

 
 
 
 

99. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

101. Late blight of potato is caused by :

 
 
 
 


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