Which of the following is a free living nitrogen fixing bacterium present in the soil? |
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a) |
Nitrosomonas |
b) |
Rhizobium |
c) |
Azotobacter |
d) |
Pseudomanas |
Which of the following is a free living nitrogen fixing bacterium present in the soil? |
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a) |
Nitrosomonas |
b) |
Rhizobium |
c) |
Azotobacter |
d) |
Pseudomanas |
(c)
The genus-Azotobacter comprises large, free-living, Gram negative, obligately aerobic, rod-shaped bacteria which are capable of fixation of nitrogen non-symbiotically.
Rhizobium is a symbiotic nitrogen fixing bacteria, Nitrosomonas is a nitrifying bacteria, while Pseudomanas sp. is denitrifying bacteria.