Uncategorized

By Vijay Wardhan • December 8, 2024

1. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

13. Black rust of wheat is caused by:

 
 
 
 

14. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

17. Liverworts are included in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

21. Vascular cryptogam is the term used for :

 
 
 
 

22. Bryophyta have been placed in cryptogams because:

 
 
 
 

23. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

26. Which of the following are included in Tracheophyta?

 
 
 
 

27. Fruits are not found in :

 
 
 
 

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

 
 
 
 

29. Oswald Tippo’s classification was based on :

 
 
 
 

30. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

33. Which of the following is a monocot?

 
 
 
 

34. Banana bunchy top is caused by :

 
 
 
 

35. Citrus canker is caused by :

 
 
 
 

36. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

39. Maximum diversity of life forms occurs in :

 
 
 
 

40. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

43. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

44. Ovules are not found enclosed in ovary in :

 
 
 
 

45. Downy mildew disease is caused by :

 
 
 
 

46. Ergot is obtained from :

 
 
 
 

47. The disease symptom necrosis refers to :

 
 
 
 

48. Leaf spot of groundnut is caused by :

 
 
 
 

49. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

51. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

55. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

60. Woody climbers are known as :

 
 
 
 

61. Roots are absent in :

 
 
 
 

62. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

64. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

66. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

68. Disease resistant plant varieties can be produced by :

 
 
 
 

69. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

70. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

72. Red rot of sugarcane is caused by :

 
 
 
 

73. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

75. Spermatophyta are characterized by producing:

 
 
 
 

76. Gymnosperms could also be called as:

 
 
 
 

77. Seeds are characteristically found in :

 
 
 
 

78. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

80. Which one of the following is a monocot?

 
 
 
 

81. Club moss and Peat moss belong to:

 
 
 
 

82. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

84. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

86. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

90. Which among the following is a shrub?

 
 
 
 

91. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

94. Aflatoxin is produced as a product in :

 
 
 
 

95. Embryophyta includes :

 
 
 
 

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

 
 
 
 

97. Cryptogams include :

 
 
 
 

98. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 


Leave a Reply

Your email address will not be published. Required fields are marked *