by

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

 
 
 
 

2. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

8. Black rust of wheat 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. All but one group are included in tracheophyta; which group is this :

 
 
 
 

11. Pythium debaryanum is the causative agent of:

 
 
 
 

12. Aflatoxin is produced as a product in :

 
 
 
 

13. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

17. Club moss and Peat moss belong to:

 
 
 
 

18. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

23. Quarantine regulations are concerned with:

 
 
 
 

24. Which of the following does not contain chlorophyll?

 
 
 
 

25. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. Fruits are not found in :

 
 
 
 

29. Chief constituents of bordeaux mixture are :

 
 
 
 

30. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

32. Embryophyta includes :

 
 
 
 

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

 
 
 
 

34. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

37. Oswald Tippo’s classification was based on :

 
 
 
 

38. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

40. The disease symptom necrosis refers to :

 
 
 
 

41. Liverworts are included in :

 
 
 
 

42. Vascular cryptogam is the term used for :

 
 
 
 

43. Disease resistant plant varieties can be produced by :

 
 
 
 

44. Ovules are not found enclosed in ovary in :

 
 
 
 

45. Smut of maize is caused by :

 
 
 
 

46. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

49. Roots are absent in :

 
 
 
 

50. Spermatophyta are characterized by producing:

 
 
 
 

51. Rice, pea, potato are :

 
 
 
 

52. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

55. Bryophyta have been placed in cryptogams because:

 
 
 
 

56. Gymnosperms could also be called as:

 
 
 
 

57. Etiology includes the study of :

 
 
 
 

58. Mixed cropping helps :

 
 
 
 

59. Cryptogams include :

 
 
 
 

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

 
 
 
 

61. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

62. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

66. Vascular tissue is found in :

 
 
 
 

67. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. Citrus canker is caused by :

 
 
 
 

80. Which of the following are included in Tracheophyta?

 
 
 
 

81. Which one of the following is a monocot?

 
 
 
 

82. Downy mildew disease is caused by :

 
 
 
 

83. Green plants are classified as :

 
 
 
 

84. Ergot is obtained from :

 
 
 
 

85. Late blight of potato is caused by :

 
 
 
 

86. Leaf spot of groundnut is caused by :

 
 
 
 

87. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

90. Woody climbers are known as :

 
 
 
 

91. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

93. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

96. Ovary is absent in :

 
 
 
 

97. Pteridophytes are also known as :

 
 
 
 

98. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

100. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 


Leave a Comment