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

 
 
 
 

2. Quarantine regulations are concerned with:

 
 
 
 

3. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

6. Which of the following does not contain chlorophyll?

 
 
 
 

7. Maximum diversity of life forms occurs in :

 
 
 
 

8. Which of the following are included in Tracheophyta?

 
 
 
 

9. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

11. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

13. Disease resistant plant varieties can be produced by :

 
 
 
 

14. Green plants are classified as :

 
 
 
 

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

 
 
 
 

16. Chief constituents of bordeaux mixture are :

 
 
 
 

17. Vascular tissue is found in :

 
 
 
 

18. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

21. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

23. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

27. Club moss is the common name of :

 
 
 
 

28. Etiology includes the study of :

 
 
 
 

29. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

32. Liverworts are included in :

 
 
 
 

33. Late blight of potato is caused by :

 
 
 
 

34. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

35. Pteridophytes are also known as :

 
 
 
 

36. Which of the following is a monocot?

 
 
 
 

37. Smut of maize is caused by :

 
 
 
 

38. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

42. Banana bunchy top is caused by :

 
 
 
 

43. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

45. Oswald Tippo’s classification was based on :

 
 
 
 

46. Embryo formation is not known in :

 
 
 
 

47. Oswald Tippo’s classification is:

 
 
 
 

48. Leaf spot of groundnut is caused by :

 
 
 
 

49. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

53. Ovary is absent in :

 
 
 
 

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

 
 
 
 

55. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

61. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. Fruits are not found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. Rice, pea, potato are :

 
 
 
 

76. Club moss and Peat moss belong to:

 
 
 
 

77. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

79. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

81. Roots are absent in :

 
 
 
 

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

 
 
 
 

83. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

85. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

87. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

90. Black rust of wheat is caused by:

 
 
 
 

91. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

93. Cryptogams include :

 
 
 
 

94. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

96. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

98. Bryophyta have been placed in cryptogams because:

 
 
 
 

99. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

101. Gymnosperms could also be called as:

 
 
 
 


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