Agriculture Microbiology MCQ tribhuvan University 6

51. Moledenum metal is a component of enzyme complex and play a role in
a. Carbon cycle b. Nitrogen Fixation c. Sulphur oxidation d. Denitrification
52. leghemoglobin is
a. a type of hemoglobin responsible for carrying oxygen to tissues
b. red, iron containing protein, which has role in Nitrogen fixation
c. hemoglobin with sickle shape
d: hemoglobin responsible for phosphate solubilization
53. rhizospheric effect is a type of ………… interaction
a. Neutralism b. commensalisms c. Synergism d. Mutalism
54. soil harbors, which one of the following pathogenic fungi
a. H. capsulatum b. C. neoformans c. A. fumigatus d. all of the above
55. microbial community in area of low PH is dominated by
a. Actinomycetes b. Protozoa c. Fungi d. bacteria
56. rhizobium and Azotobacter were discovered by
a. Beijernck b. Winogradsky c. Ruinen d. Hiltner
57. an obligate anaerobe, Clostridium pasteurianum, which is capable of fixing atomospheric nitrogen was identified by
a. Louis Pasteur b. Beijernck c. Winogradsky d. Ruinen
58. major inorganic sulfur compound in aerobic soil is ……………..
a. sulfite b. sulfate c. thiosulfate d. Sulfide
59. major inorganic sulfur compound in anaerobic soil is……….
a. sulfite b. sulfate c. thiosulfate d. Sulfide
60. the percentage of sulfur/phosphorus in the earths crust is
a. 0.1 b. 0.2 c. 1 d. 3