An example of nitrogen fixing bacteria in the soil is __________?

Environmental Science
Aroma Ann0

A. Rhizobium
B. Nostoc
C. Azotobacter
D. Nitrobacter

Azotobacter is a genus of usually motile, oval or spherical bacteria that form thick-walled cysts and may produce large quantities of capsular slime. They are aerobic, free-living soil microbes which play an important role in the nitrogen cycle in nature, binding atmospheric nitrogen, which is inaccessible to plants, and releasing it in the form of ammonium ions into the soil (nitrogen fixation).

Related Mcqs:

  1. The bacteria, which reduce nitrates in the soil to gaseous nitrogen, are known as denitrifying bacteria such as:
  2. Nitrogen fixing blue green alga is _____________.
  3. The relationship between nitrogen fixing bacteria and leguminous plants is an example for ____________.
  4. Except which one, all other processes help in adding nitrogen to soil:
  5. The soil organisms are:?
  6. Relationship between nitrogen fixing bacteria and a legume plant is described as:?
  7. Which among the following result in the formation of soil?
  8. An example of an abiotic component is __________?
  9. A free-living anaerobic bacterium capable of N2 fixation in soil is:
  10. The unit of total water content of the soil is known as __________?

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