An example of nitrogen fixing bacteria in the soil
A). Rhizobium
B). Nostoc
C). Azotobacter
D). Nitrobacter
Azotobacter
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).
1. What is the Greenhouse Effect?
4. Trichodermaharzianum has proved a useful microorganism for
5. The most abundant gases in the earth's atmosphere by volume are:
6. Which association below is not correct?
8. In pond ecosystem, the pyramid of biomass is
10. The effect of interspecific competition on niches is to make them