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1. Maximum diversity of life forms occurs in :

 
 
 
 

2. Which of the following does not contain chlorophyll?

 
 
 
 

3. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

5. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

7. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

15. Most primitive embryophytes are placed in :

 
 
 
 

16. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

18. Downy mildew disease is caused by :

 
 
 
 

19. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

22. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

25. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. Liverworts are included in :

 
 
 
 

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

 
 
 
 

30. Citrus canker is caused by :

 
 
 
 

31. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

33. Spermatophyta are characterized by producing:

 
 
 
 

34. Rice, pea, potato are :

 
 
 
 

35. Ovules are not found enclosed in ovary in :

 
 
 
 

36. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

38. Cryptogams include :

 
 
 
 

39. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

42. Roots are absent in :

 
 
 
 

43. Mixed cropping helps :

 
 
 
 

44. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

48. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

52. Vascular cryptogam is the term used for :

 
 
 
 

53. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

54. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Bryophyta have been placed in cryptogams because:

 
 
 
 

59. Pteridophytes are also known as :

 
 
 
 

60. Small epidermal swellings due to infection are called :

 
 
 
 

61. Which of the following are included in Tracheophyta?

 
 
 
 

62. Disease resistant plant varieties can be produced by :

 
 
 
 

63. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

67. Oswald Tippo’s classification is:

 
 
 
 

68. The disease symptom necrosis refers to :

 
 
 
 

69. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

71. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

76. Which among the following is a shrub?

 
 
 
 

77. Embryo formation is not known in :

 
 
 
 

78. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

80. Which one of the following is a monocot?

 
 
 
 

81. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

85. Club moss is the common name of :

 
 
 
 

86. Fruits are not found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

91. Chief constituents of bordeaux mixture are :

 
 
 
 

92. Ergot is obtained from :

 
 
 
 

93. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

96. Pythium debaryanum is the causative agent of:

 
 
 
 

97. Gymnosperms could also be called as:

 
 
 
 

98. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

100. Etiology includes the study of :

 
 
 
 

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

 
 
 
 


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