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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

7. Roots are absent in :

 
 
 
 

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

 
 
 
 

9. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

11. Oswald Tippo’s classification was based on :

 
 
 
 

12. Chief constituents of bordeaux mixture are :

 
 
 
 

13. Ovules are not found enclosed in ovary in :

 
 
 
 

14. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

17. Red rot of sugarcane is caused by :

 
 
 
 

18. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

25. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

27. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

28. Gymnosperms could also be called as:

 
 
 
 

29. Pteridophytes are also known as :

 
 
 
 

30. Ergot is obtained from :

 
 
 
 

31. Club moss and Peat moss belong to:

 
 
 
 

32. Which of the following statements is not correct?

 
 
 
 

33. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

35. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Green plants are classified as :

 
 
 
 

39. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

43. Which of the following are included in Tracheophyta?

 
 
 
 

44. Embryophyta includes :

 
 
 
 

45. Most primitive embryophytes are placed in :

 
 
 
 

46. Liverworts are included in :

 
 
 
 

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

 
 
 
 

48. Spermatophyta are characterized by producing:

 
 
 
 

49. Oswald Tippo’s classification is:

 
 
 
 

50. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

52. Etiology includes the study of :

 
 
 
 

53. Which among the following is a shrub?

 
 
 
 

54. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

60. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

62. Leaf spot of groundnut is caused by :

 
 
 
 

63. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

65. Fruits are not found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. Which of the following is a monocot?

 
 
 
 

70. Late blight of potato is caused by :

 
 
 
 

71. Vascular cryptogam is the term used for :

 
 
 
 

72. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

74. Cryptogams include :

 
 
 
 

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

 
 
 
 

76. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. Citrus canker is caused by :

 
 
 
 

80. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

83. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

85. Disease resistant plant varieties can be produced by :

 
 
 
 

86. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

89. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

92. Club moss is the common name of :

 
 
 
 

93. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

94. Vascular tissue is found in :

 
 
 
 

95. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

97. Ovary is absent in :

 
 
 
 

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

 
 
 
 

99. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

101. Mixed cropping helps :

 
 
 
 


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