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

 
 
 
 

2. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

4. Aflatoxin is produced as a product in :

 
 
 
 

5. Maximum diversity of life forms occurs in :

 
 
 
 

6. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

8. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

14. Woody climbers are known as :

 
 
 
 

15. Oswald Tippo’s classification was based on :

 
 
 
 

16. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

18. Quarantine regulations are concerned with:

 
 
 
 

19. Rice, pea, potato are :

 
 
 
 

20. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

22. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

26. Late blight of potato is caused by :

 
 
 
 

27. Most primitive embryophytes are placed in :

 
 
 
 

28. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

33. Vascular tissue is found in :

 
 
 
 

34. Bryophyta have been placed in cryptogams because:

 
 
 
 

35. Club moss is the common name of :

 
 
 
 

36. Which of the following does not contain chlorophyll?

 
 
 
 

37. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

39. Citrus canker is caused by :

 
 
 
 

40. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. Roots are absent in :

 
 
 
 

45. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

47. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

49. Vascular cryptogam is the term used for :

 
 
 
 

50. Fruits are not found in :

 
 
 
 

51. Oswald Tippo’s classification is:

 
 
 
 

52. Green plants are classified as :

 
 
 
 

53. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

54. Disease resistant plant varieties can be produced by :

 
 
 
 

55. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

57. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

63. Ovary is absent in :

 
 
 
 

64. The disease symptom necrosis refers to :

 
 
 
 

65. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

67. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

69. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

74. Club moss and Peat moss belong to:

 
 
 
 

75. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

78. Cryptogams include :

 
 
 
 

79. Liverworts are included in :

 
 
 
 

80. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

84. Chief constituents of bordeaux mixture are :

 
 
 
 

85. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

89. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

92. Leaf spot of groundnut is caused by :

 
 
 
 

93. Embryophyta includes :

 
 
 
 

94. Which among the following is a shrub?

 
 
 
 

95. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

99. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

101. Black rust of wheat is caused by:

 
 
 
 


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