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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

7. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

11. Embryophyta includes :

 
 
 
 

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

 
 
 
 

13. Which of the following is a monocot?

 
 
 
 

14. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

16. Aflatoxin is produced as a product in :

 
 
 
 

17. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

19. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

22. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

25. Maximum diversity of life forms occurs in :

 
 
 
 

26. Which of the following statements is not correct?

 
 
 
 

27. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

29. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

33. Club moss is the common name of :

 
 
 
 

34. Rice, pea, potato are :

 
 
 
 

35. Fruits are not found in :

 
 
 
 

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

 
 
 
 

37. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. Mixed cropping helps :

 
 
 
 

41. Vascular tissue is found in :

 
 
 
 

42. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

44. Roots are absent in :

 
 
 
 

45. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

47. Green plants are classified as :

 
 
 
 

48. Seeds are characteristically found in :

 
 
 
 

49. Which one of the following is a monocot?

 
 
 
 

50. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

52. Banana bunchy top is caused by :

 
 
 
 

53. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

60. Disease resistant plant varieties can be produced by :

 
 
 
 

61. Red rot of sugarcane is caused by :

 
 
 
 

62. Club moss and Peat moss belong to:

 
 
 
 

63. Oswald Tippo’s classification is:

 
 
 
 

64. Most primitive embryophytes are placed in :

 
 
 
 

65. The disease symptom necrosis refers to :

 
 
 
 

66. Woody climbers are known as :

 
 
 
 

67. Red rot of sugarcane is caused by :

 
 
 
 

68. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

71. Liverworts are included in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. Pythium debaryanum is the causative agent of:

 
 
 
 

76. Pteridophytes are also known as :

 
 
 
 

77. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

79. Small epidermal swellings due to infection are called :

 
 
 
 

80. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

84. Leaf spot of groundnut is caused by :

 
 
 
 

85. Spermatophyta are characterized by producing:

 
 
 
 

86. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

88. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

92. Embryo formation is not known in :

 
 
 
 

93. Which of the following does not contain chlorophyll?

 
 
 
 

94. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

99. Bryophyta have been placed in cryptogams because:

 
 
 
 

100. Ergot is obtained from :

 
 
 
 

101. Downy mildew disease is caused by :

 
 
 
 


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