Microbiology of Soils Questions

• Which are the main source of biofertilisers?
• Nitrifying bacteria can not be isolated directly by the usual techniques employed to isolate hetrotrophic bacteria. The reasons may be due to
• Which of the following is capable of oxidizing sulfur to sulfates?
• Which of the following statement is not true about composition of biogas?
• The diagnostic enzyme for denitrification is
• Syntrophism involves
• The breakdown of cattle manure in biogas is accomplished by which of the following type of bacteria?
• Which of the following is correct?
• The microbial ecosystem of soil includes
• The phenomenon of commensalism refers to a relationship between organisms in which
• __________ play a key role in the transformation of rock to soil.
• The conversion of molecular nitrogen into ammonia is known as
• Which of the following species of different genera of bacteria are not capable of transforming nitrate to nitrogen?
• Bacteria, as a group, are responsible for
• Which of the following is not the biofertilisers producing bacteria?
• Denitrification is carried out
• The crops which are involved in nitrogen fixation are
• Nitrogen fixation refers to the direct conversion of atmospheric nitrogen gas into
• The groups of symbiotic bacteria, which have the ability to fix nitrogen
• Nitrogen fixation