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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. Vascular cryptogam is the term used for :

 
 
 
 

5. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

9. Club moss is the common name of :

 
 
 
 

10. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

12. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

16. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

19. Cryptogams include :

 
 
 
 

20. Quarantine regulations are concerned with:

 
 
 
 

21. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

26. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

29. Bryophyta have been placed in cryptogams because:

 
 
 
 

30. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

32. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

34. Small epidermal swellings due to infection are called :

 
 
 
 

35. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

39. Which one of the following is a monocot?

 
 
 
 

40. Green plants are classified as :

 
 
 
 

41. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

46. Banana bunchy top is caused by :

 
 
 
 

47. Oswald Tippo’s classification is:

 
 
 
 

48. Oswald Tippo’s classification was based on :

 
 
 
 

49. Ergot is obtained from :

 
 
 
 

50. Late blight of potato is caused by :

 
 
 
 

51. Mixed cropping helps :

 
 
 
 

52. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

54. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

57. Citrus canker is caused by :

 
 
 
 

58. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

60. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

63. Which of the following does not contain chlorophyll?

 
 
 
 

64. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

66. Roots are absent in :

 
 
 
 

67. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

70. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

73. Spermatophyta are characterized by producing:

 
 
 
 

74. Ovary is absent in :

 
 
 
 

75. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

77. Gymnosperms could also be called as:

 
 
 
 

78. Which among the following is a shrub?

 
 
 
 

79. Fruits are not found in :

 
 
 
 

80. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

82. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

85. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

88. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

91. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

94. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

95. Vascular tissue is found in :

 
 
 
 

96. Ovules are not found enclosed in ovary in :

 
 
 
 

97. Most primitive embryophytes are placed in :

 
 
 
 

98. Downy mildew disease is caused by :

 
 
 
 

99. Liverworts are included in :

 
 
 
 

100. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

101. Red rot of sugarcane is caused by :

 
 
 
 


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