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By Vijay Wardhan • December 8, 2024

1. Late blight of potato is caused by :

 
 
 
 

2. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

4. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

11. Vascular tissue is found in :

 
 
 
 

12. Small epidermal swellings due to infection are called :

 
 
 
 

13. Quarantine regulations are concerned with:

 
 
 
 

14. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

17. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

19. Liverworts are included in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

22. Pteridophytes are also known as :

 
 
 
 

23. Club moss and Peat moss belong to:

 
 
 
 

24. Ovary is absent in :

 
 
 
 

25. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

31. Chief constituents of bordeaux mixture are :

 
 
 
 

32. Green plants are classified as :

 
 
 
 

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

 
 
 
 

34. Ergot is obtained from :

 
 
 
 

35. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

37. Which of the following statements is not correct?

 
 
 
 

38. Which one of the following is a monocot?

 
 
 
 

39. Spermatophyta are characterized by producing:

 
 
 
 

40. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

42. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

44. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

47. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

49. The disease symptom necrosis refers to :

 
 
 
 

50. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

56. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

59. Gymnosperms could also be called as:

 
 
 
 

60. Rice, pea, potato are :

 
 
 
 

61. Downy mildew disease is caused by :

 
 
 
 

62. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

64. Embryophyta includes :

 
 
 
 

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

 
 
 
 

66. Pythium debaryanum is the causative agent of:

 
 
 
 

67. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

69. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

76. Leaf spot of groundnut is caused by :

 
 
 
 

77. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

81. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

84. Which of the following does not contain chlorophyll?

 
 
 
 

85. Citrus canker is caused by :

 
 
 
 

86. Fruits are not found in :

 
 
 
 

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

 
 
 
 

88. Which of the following is a monocot?

 
 
 
 

89. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

90. Red rot of sugarcane is caused by :

 
 
 
 

91. Mixed cropping helps :

 
 
 
 

92. Most primitive embryophytes are placed in :

 
 
 
 

93. Vascular cryptogam is the term used for :

 
 
 
 

94. Woody climbers are known as :

 
 
 
 

95. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

97. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

99. Maximum diversity of life forms occurs in :

 
 
 
 

100. Club moss is the common name of :

 
 
 
 

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

 
 
 
 


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