Plant Pathology MCQs Set IV


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 IV

Select one option out of four given options

  1. First chemical nematicide came in to usecomplex syndrome in combination with




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  3. The ever first evaluated fungicide based onsmall rounded wheat kernels for the first time in




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  5. Yellowing of green tissues due to chlorophyll degradation is known as




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  7. Chemical which prevent the growth and multiplication of fungi is called as




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  9. The pathogen of Irish potato famine was




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  11. Somatic phase of the fungi is known as




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  13. Fungi which requires two different host plants to complete its life cycle




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  15. Yellowing of plants due to lack of light




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  17. The wide spread and sever outbreak of a disease over an area




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  19. In case of citrus canker disease, falling of leaves is due to




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  21. First scientist who describes the plant parasitic nematodes




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  23. According to the recent taxonomic classification citrus canker is caused by




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  25. Prion consists of




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  27. Genetics of plant pathogens was first studied by




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  29. The bacterium in case of bacterial blight of rice enters through




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  31. The ability of the plants to sustain the effect of injury with no or little effect on yield




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  33. The colony color of Xanthomonas is




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  35. Bacteria can be best grown on




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  37. In association of organisms when one injure other for food or other demand




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  39. Many spores of soil borne fungi fail to geminate due to




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  41. infection cycle starts with




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  43. Virus and Viroides themselves release substances during infectin




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  45. The cuticular waxes are degraded by Puccinia horde by the release of




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  47. Cutin breakdown by cutiniase enzymes produces




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  49. The disintegration of starch by the activity of plant pathogens by the enzyme




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  51. HV toxin, HC toxin Victroin are the examples of




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  53. In a disease corn smut caused by Ustilago midis, there is increase level of




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  55. In the diseased plants the rate of photosynthesis




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  57. The upward and down ward movement of water and nutrients is blocked in diseases




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  59. The rate of respiration in the diseased plants




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  61. Various substances released by the pathogens in their immediate environment for the identification of host




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  63. Formation of abscission layer is an example of




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  65. Hypersensitive (HR) response appear in




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  67. Phtoalexins are the substances produce as a result of




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  69. Substances produce by the engineered plants due to encoded animals genes




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  71. Resistance which develops in distance, untreated parts of the plants




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  73. In Plant pathogenic bacteria, mechanisms of genetic variability




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  75. Condition in which the pathogens loss its virulence in the culture




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  77. The identical individual produce asexually from variant




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  79. Horizontal resistance is




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  81. A virulence (avr) genes was first identified by




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  83. New strains of many pathogens appear as result of




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  85. New crop varieties in our country comes in to field as result of




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  87. Common scab of potato disease is favored by pH




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  89. Area under disease progress curve indicate




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  91. EPIVEN is computer simulation program for




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  93. Disease pyramid is now consists of




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  95. To keep the pathogen away from the area of the host is known as




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  97. Example of most common mycoparasite fungi is




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  99. The term cross protection is used commonly for




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  101. The toxic substance in the Bordeaux mixture is




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  103. The discovery of Bordeaux mixture is made




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  105. Homothallic are the fungi in which the sexual reproduction takes place in




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  107. Sterole inhibiting fungicides inhibit the synthesis of




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  109. Motile spore is also known as




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  111. Time taken by the new synthesis chemical to become pesticides is




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  113. Organisms which obtain their food from dead organic matter




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  115. Integrated disease control includes




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  117. When the haploid thallus alternate with the diploid thallus it is called as




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  119. Damping off disease is caused by the members of




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  121. Late blight of potato requires




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  123. The order in which yeasts are included are




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  125. Late blight of potato can be controlled by




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  127. Powdery mildews are




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  129. Alkaloids which are poison for man and animals are produce




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  131. Fungi that are grown on animal dung are known




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  133. Mushrooms are member of




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  135. Most powdery mildew diseases are favored by




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  137. Bacteriology is the study of




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  139. Rice blast disease is favored by




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  141. Scab type symptoms are produced due to




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  143. Rod shaped bacteria are known as




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  145. Hard resistant and physiologically dormant cells of bacteria are called as




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  147. Bacteria which have clusters of flagella on each end




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  149. Fusrium oxysporium causes




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  151. Which of the following is Phenerogamic parasite




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  153. Mycoplasma are the bacteria which lack




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  155. Mycoplasmas causes human being disease




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  157. Erwinia carotovora spp atroseptica causes




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  159. First book on Plant pathology is written by




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  161. Brown Rot of stone fruit is caused by




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  163. The example of L- farm bacteria is




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  165. Phtoplasmas can be grown on




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  167. Most of the Phenerogemic parasites lack




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  169. Bacterial blight of cotton is




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  171. Molecular Plant Pathology started as real branch of Plant Pathology in




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  173. Prion can infect




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  175. Kock’s postulates are used for the confirmation of




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