Plant Pathology MCQs Set IX


The quiz is designed to assess your understanding about the Plant Pathology. These MCQss is prepared by the professors of Plant pathology department and very much helpful for CSS, PMS, NTS, PPSC, FPSC, SPSC, lecturer, GRE Subject and all other competitive examinations. Choose the best answer from four given options. The answer keys is given at the end of the test


Plant Pathology MCQs Set IX

Select one option out of four given options

  1. The conjugation of bacteria can be mediated by:





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  2. Viroids can be detected through:





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  3. The disease caused by the alga is called (





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  4. MLO are transmitted by





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  5. Ufra disease of rice is a





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  6. A key enzyme in the metabolism of phenolics is :





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  7. When host resistance is equally effective against all races of a pathogen:





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  8. Streptomycin is used to control the:





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  9. Cauliflower mosaic virus (CaMV) is the plant virus with:





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  10. A five kingdom classification of living world was proposed by





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  11. Fungi in which sexual compatibility is controlled by one pair of gene are also called:





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  12. The coupling of oxidation of glucose with the addition of phosphate to ADP to produce ATP is called:





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  13. Copying of messenger RNA into proteins is known as:





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  14. The penicillin was discovered in 1928 by





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  15. The ascogonia are usually globular and bear a hairlike outgrowth called:





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  16. In rusts and smuts the karyogamy and meiosis occur in special spores called





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  17. The word “Todestool” means





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  18. The particles concerned with bacterial genome-replication and septum formation during the cell division are called:





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  19. The oxidation of organic compounds by oxygen is called :





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  20. The presence of two types of symmetry in the viral protein coat is called





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  21. The phages that show lysogenic cycle are called





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  22. When petals become green due to virus infection, it is called





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  23. Prions mean:





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  24. Complete elimination of pathogen from the surface with chemical or heat is called





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  25. The water contained in the vesicle exerts pressure on the sporangium and on bursting throws it away to a greater distance .This is known as





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  26. Dissemination of spores through wind is called:





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  27. The correct word for the study of fungi is





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  28. Downward movement of spores due to conventional currents is known as





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  29. When due to the intensification of the inoculum it is not possible to grow that crop in that area is called





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  30. Occurrence of plant diseases at very irregular intervals and locations and in relatively a few instances is called





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  31. The layer which inhibit the invasion of pathogen beyond the initial lesion but also block the spread of any toxic substances that the pathogen may secrete is called as:





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  32. When a given variety does not have an antigen that is present in a particular pathogen race, the variety is to that race





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  33. The conidiophores dark, simple , elongate or short conidia dark with both cross and longitudinal septa ,elliptical to ovoid and in chain in case of genus:





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  34. The type of resistance which is qualitative non-uniform, unstable and have no intermediate grade is called:





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  35. TMV is very destructive and cause colossal losses to tobacco crop can be transmitted through:





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  36. Female whitefly,a vector of CLCuV,is more efficient than male :





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  37. Sudden and fundamental change in heredity producing new individuals unlike their parents is called





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  38. The disease “citrus stubborn”is caused by





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  39. The risk assessment, required for deciding a resistant crop or cultivar should be grown in a region where certain viruses regularly occur,is mostly called





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  40. Paired virus containing single stranded DNA is called





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  41. The technique emplopyed for the protein blotting is called





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  42. The minimum period that a vector needs to acquire virus from a disease source





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  43. A spore capable of moving by cilia or flagella is called





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  44. A cup like structure at the base of stipe in agaric mushrooms is called





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  45. Oranisms capable of growing at low temperature are called





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  46. Viruses those do not circulate within the vector but possess the ability of retention of virus for a few days before transmission are called





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  47. A substance produced by one microorganism and inhibiting or killing the other mirooganism is called





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  48. A substance used to counteract the effects of a poison is called





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  49. Degeration or under development of a plant part or an organ is called





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  50. Geral and rapid killing of leaves,flowers or stems is called





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  51. A completely closed ascocarp is called





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  52. A fungus which can exist in either filamentous or a yeast-like growth form is called





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  53. Cell or projection connecting spores in a chain is known as





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  54. More rapid growth of the upper side of an organ is called





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  55. Distortion due to cell injury is called





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  56. Organisms difficult to isolate or culture on ordinary culture medium are called





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  57. Fungi in which male and female gametes are produced on distinct mycelia are called





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  58. Organisms those attack living tissues but may continue to sporulate after the tissue is dead are called





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  59. Elongated, unsegmented, cylindrical worm is called





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  60. Requring many years to complete of life or disease cycle is referred to as





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  61. Removal and burning of infected plant parts is called





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  62. A small blister like elevation of epidermis is called





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  63. A large, naked, non-motile female gamete in Oomyetes is called





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  64. A virus which does not cause a disease is called





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  65. Outer wall of fungal fruiting body or fruitification is called





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  66. Evolution of race or species is called





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  67. Formae specialis is





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  68. Long or needle shaped spore is called





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  69. A mechanism whereby recombination of hereditary properties occurs within fungal heterokaryons is known as





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  70. One parts per million (ppm) is equal to





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  71. First record of the plant disease named by a philosopher





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  72. Modern plant pathology begins by:





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  73. Kochs’ Postulates were formulated in:





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  74. First test book on modern plant pathology was published by





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  75. Important plant diseases found in olden times are:





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  76. Due to certain disease change in colour of the foliage or fruits due to the





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  77. Destruction of organs in plants may be due to:





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  78. Some organs of the diseased plant may be stimulated by the reaction of the parasite due to:





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  79. In the disease cycle in case of black wart disease of potato, repeated mitotic nuclear divisions results in the formation of:





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  80. Pre-emergence damping off in case of seedling disease, encourage by:





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  81. The bacterial cell that do not possesses flagella and are non motile are known as:





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  82. Ear cochle disease of wheat is caused by:





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  83. First quarantine law was passed in 1660 by:





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  84. Black or stem rust of wheat occurs in





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  85. Spores of bunt give had smell like





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  86. Spores balls are farmed in case of





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  87. Loose smut disease causes ____________losses of wheat in world production.





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  88. To decrease the hazards of root rot intercropping of cotton with ____________is recommended.





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  89. Gram blight is a serious disease in ____________





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  90. Tikka disease of ground nut is more prevalent in ___________





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  91. Pale brown spots forming concentric zones on leaves appear in ____________





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  92. Red rot of sugar cane usually attack on





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  93. Claviceps purpurea is used to produce ____________





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  94. Citrus wither tip disease starts spreading from ____________





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  95. Lime sulphur mixture is used in ____________ ratio for the control of citrus wither tip.





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  96. Best way to control Mango anthracnose is ____________





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  97. Great reduction in leaf size due to attack of parasites is called ____________





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  98. Disease require ____________to appear in epidemic form.





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  99. Black wart of potato was first recorded in ___________





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  100. Famous Irish Famine occur in ____________





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