by

1. Maximum diversity of life forms occurs in :

 
 
 
 

2. Chief constituents of bordeaux mixture are :

 
 
 
 

3. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

5. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

9. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

11. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

14. Mixed cropping helps :

 
 
 
 

15. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

20. Rice, pea, potato are :

 
 
 
 

21. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

23. Which of the following is a monocot?

 
 
 
 

24. Pteridophytes are also known as :

 
 
 
 

25. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

27. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

29. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

32. Fruits are not found in :

 
 
 
 

33. Ovules are not found enclosed in ovary in :

 
 
 
 

34. Woody climbers are known as :

 
 
 
 

35. Banana bunchy top is caused by :

 
 
 
 

36. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. Embryophyta includes :

 
 
 
 

41. Embryo formation is not known in :

 
 
 
 

42. Which one of the following is a monocot?

 
 
 
 

43. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

45. Red rot of sugarcane is caused by :

 
 
 
 

46. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

48. Which of the following statements is not correct?

 
 
 
 

49. Liverworts are included in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

53. Ergot is obtained from :

 
 
 
 

54. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

59. Pythium debaryanum is the causative agent of:

 
 
 
 

60. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

62. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

64. Green plants are classified as :

 
 
 
 

65. Small epidermal swellings due to infection are called :

 
 
 
 

66. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

68. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. Black rust of wheat is caused by:

 
 
 
 

73. Quarantine regulations are concerned with:

 
 
 
 

74. Gymnosperms could also be called as:

 
 
 
 

75. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

78. Late blight of potato is caused by :

 
 
 
 

79. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

82. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

87. Downy mildew disease is caused by :

 
 
 
 

88. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

93. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

95. Which of the following are included in Tracheophyta?

 
 
 
 

96. Smut of maize is caused by :

 
 
 
 

97. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

99. Cryptogams include :

 
 
 
 

100. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 


Leave a Comment