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Agriculture Plant Pathology Set-3

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1. Taphrina causes the disease:




2. Term commensalism shows:




3. The anal and vulval openings in nematodes are located on:




4. The ______ botanist Micheli (1679-1737) was the first scientist who in 1729 studied fungi and saw their spores:




5. The casual organism for earcockle disease of wheat is:




6. The class ends with:




7. The discovery of _____ mosaic by Meyer in 1886 was the beginning of studies on viruses as incitants of diseases in plants:




8. The epidermal cells of ____ plant become filled with toxic terpenoid aldehyde after they are few days old and these cells are rarely penetrated by pathogens:




9. The founder of mycology was:




10. The genera Claviceps. Alternaria and Sclerospora are:




11. The microorganism used in brewing industry is:




12. The nematode Radopholus similes has shown the maximum numbers at a soil depth of:




13. The organism included in order pernosporales cause the disease known as:




14. The organism lacking a well defined necleus are termed:




15. The organisms included in order Peronosporales cause the disease known as:




16. The organisms lacking a well defined nucleus are termed:




17. The plant disease caused by an algae is:




18. The plant disease primarily responsive for the Great Bengal Famine of 1943 was:




19. The plant mycoplasmal diseases are transmitted by:




20. The two important diseases of sugarcane would include:




21. Tilletia causes the disease:




22. To which group Dithane Z-78 belongs:




23. Choose the odd one:




24. Tobacco mosaic virus was first reported by:




25. Tobacco mosaic infections intity was isolated in pure crystalline form of protein by:




26. Tolyposorium penicillarie cause:




27. Tomato leaf curl is caused by:




28. Transduction is a process of multiplication in:




29. Trichodorus belongs to family:




30. Tundu disease of what is caused by:




31. Who proved that virus could pass through filters with pores small enough to retain bacteria?




32. Ufra disease of rice is caused by:




33. Leaf curl of tobacco is caused by:




34. 165. Uncinuls causes the disease:




35. Used lense for the first time to study micro-organism:




36. Virus is transmitted by nematode:




37. Who is known as the father of nematology?




38. When bacterial cells are subjected to unfavourable conditions they form:




39. Which are the cellulose attacking fungi at the time of decomposition of organic compound?




40. Which fungus produces aflatoxin?




41. Which fungus supresses various pathogenic fungi present in soil?




42. Which is citrus namatode?




43. Which is sulphur bacteria?




44. Which is the root knot nematode?




45. Which of the following nematicide is a carbamate?




46. Which of the following nematodes attack above plant parts?




47. Which of the nutrient is supplied by mycorrhiza to the plant?




48. Which of them is a gram-positive bacterium?




49. Which of them is a poisonous mushroom?




50. Which one of the following groups consists of systemic fungicides?




51. Which one of the following correctly define the period between inoculation and appearance of the first disease symptom?




52. Which one of the following helps in maintaining the shape of nematodes?




53. Which one of the following is known as downy mildew fungus?




54. Which one of the following is the best method of controlling ear cockle disease of wheat?




55. Which one of the following is the cause of spreading decline of citrus?




56. Which one of the following is the correct mode of infection in Ergot of bajra?




57. Which one of the following is the correct order in which they appear during biocontrol operations?




58. Which one of the following pairs is not correctly matched?




59. Which one of the following pairs of crop and disease is correctly matched?




60. Which one of the following remedies is to be suggested in case of failure of a manuallyoperated sprayer to retain pressure?




61. Which one of the following sprayers could require the lowest volume of spray solution to cover a hectare of rice crop?




62. Which one of the following statements correctly defines economic threshold level?




63. Which of the following statements correctly defines the alternate host of a pathogen/parasite?




64. Which one of the following tissue is most suitable for tissue culture to produce virus free plants of potato?




65. Which shows the symbiotic relationship?




66. Which was the first plant bacterial disese reported?




67. Whip smut of sugarcane is caused by:




68. White rust of crucifer is caused by:




69. Who for the first time discovered antibiotics?