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

 
 
 
 

2. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

9. Roots are absent in :

 
 
 
 

10. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

14. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

16. Pteridophytes are also known as :

 
 
 
 

17. Which of the following is a monocot?

 
 
 
 

18. Oswald Tippo’s classification was based on :

 
 
 
 

19. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

21. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

25. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

27. Aflatoxin is produced as a product in :

 
 
 
 

28. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

31. Oswald Tippo’s classification is:

 
 
 
 

32. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

33. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

37. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

39. Maximum diversity of life forms occurs in :

 
 
 
 

40. Banana bunchy top is caused by :

 
 
 
 

41. Late blight of potato is caused by :

 
 
 
 

42. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

46. Most primitive embryophytes are placed in :

 
 
 
 

47. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

53. The disease symptom necrosis refers to :

 
 
 
 

54. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

56. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

58. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

60. Cryptogams include :

 
 
 
 

61. Gymnosperms could also be called as:

 
 
 
 

62. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

66. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

68. Black rust of wheat is caused by:

 
 
 
 

69. Which among the following is a shrub?

 
 
 
 

70. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

72. Green plants are classified as :

 
 
 
 

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

 
 
 
 

74. Smut of maize is caused by :

 
 
 
 

75. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

77. Small epidermal swellings due to infection are called :

 
 
 
 

78. Which of the following does not contain chlorophyll?

 
 
 
 

79. Vascular tissue is found in :

 
 
 
 

80. Downy mildew disease is caused by :

 
 
 
 

81. Embryo formation is not known in :

 
 
 
 

82. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

84. Vascular cryptogam is the term used for :

 
 
 
 

85. Club moss is the common name of :

 
 
 
 

86. Fruits are not found in :

 
 
 
 

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

 
 
 
 

88. Liverworts are included in :

 
 
 
 

89. Quarantine regulations are concerned with:

 
 
 
 

90. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

93. Ovary is absent in :

 
 
 
 

94. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

96. Embryophyta includes :

 
 
 
 

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

 
 
 
 

98. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

100. Ergot is obtained from :

 
 
 
 

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

 
 
 
 


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