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

 
 
 
 

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

 
 
 
 

3. Ovules are not found enclosed in ovary in :

 
 
 
 

4. Leaf spot of groundnut is caused by :

 
 
 
 

5. Which of the following statements is not correct?

 
 
 
 

6. Late blight of potato is caused by :

 
 
 
 

7. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

9. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

17. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

20. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

22. Green plants are classified as :

 
 
 
 

23. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

25. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

27. Red rot of sugarcane is caused by :

 
 
 
 

28. Which among the following is a shrub?

 
 
 
 

29. Oswald Tippo’s classification was based on :

 
 
 
 

30. Vascular cryptogam is the term used for :

 
 
 
 

31. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

33. Pythium debaryanum is the causative agent of:

 
 
 
 

34. Woody climbers are known as :

 
 
 
 

35. Liverworts are included in :

 
 
 
 

36. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

38. Ovary is absent in :

 
 
 
 

39. Vascular tissue is found in :

 
 
 
 

40. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

46. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

47. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

49. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

53. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Which of the following does not contain chlorophyll?

 
 
 
 

59. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

61. The disease symptom necrosis refers to :

 
 
 
 

62. Aflatoxin is produced as a product in :

 
 
 
 

63. Chief constituents of bordeaux mixture are :

 
 
 
 

64. Fruits are not found in :

 
 
 
 

65. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

68. Red rot of sugarcane is caused by :

 
 
 
 

69. Embryophyta includes :

 
 
 
 

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

 
 
 
 

71. Smut of maize is caused by :

 
 
 
 

72. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

77. Seeds are characteristically found in :

 
 
 
 

78. Downy mildew disease is caused by :

 
 
 
 

79. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

85. Black rust of wheat is caused by:

 
 
 
 

86. Etiology includes the study of :

 
 
 
 

87. Which one of the following is a monocot?

 
 
 
 

88. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

91. Gymnosperms could also be called as:

 
 
 
 

92. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

94. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

97. Roots are absent in :

 
 
 
 

98. Mixed cropping helps :

 
 
 
 

99. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

101. Quarantine regulations are concerned with:

 
 
 
 


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