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

 
 
 
 

2. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

4. Red rot of sugarcane is caused by :

 
 
 
 

5. Multicellular and jacketed sex organs are found in :

 
 
 
 

6. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

8. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Mixed cropping helps :

 
 
 
 

12. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

15. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

17. Maximum diversity of life forms occurs in :

 
 
 
 

18. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

20. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

29. Ergot is obtained from :

 
 
 
 

30. Pythium debaryanum is the causative agent of:

 
 
 
 

31. Spermatophyta are characterized by producing:

 
 
 
 

32. Fruits are not found in :

 
 
 
 

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

 
 
 
 

34. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

39. Most primitive embryophytes are placed in :

 
 
 
 

40. Red rot of sugarcane is caused by :

 
 
 
 

41. Disease resistant plant varieties can be produced by :

 
 
 
 

42. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

45. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

47. Liverworts are included in :

 
 
 
 

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

 
 
 
 

49. Aflatoxin is produced as a product in :

 
 
 
 

50. Chief constituents of bordeaux mixture are :

 
 
 
 

51. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

53. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

57. Downy mildew disease is caused by :

 
 
 
 

58. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

64. Etiology includes the study of :

 
 
 
 

65. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

66. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

71. Bryophyta have been placed in cryptogams because:

 
 
 
 

72. Smut of maize is caused by :

 
 
 
 

73. Oswald Tippo’s classification was based on :

 
 
 
 

74. Embryophyta includes :

 
 
 
 

75. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

77. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

79. Embryo formation is not known in :

 
 
 
 

80. Vascular cryptogam is the term used for :

 
 
 
 

81. Green plants are classified as :

 
 
 
 

82. Quarantine regulations are concerned with:

 
 
 
 

83. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Which one of the following is a monocot?

 
 
 
 

87. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

90. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

93. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

97. Gymnosperms could also be called as:

 
 
 
 

98. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

100. Which of the following does not contain chlorophyll?

 
 
 
 

101. Late blight of potato is caused by :

 
 
 
 


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