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प्रश्न
Very Short Answer Question:
What is denitrification?
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उत्तर
Denitrification is the process in which anaerobic bacteria convert soil nitrates back into nitrogen gas.
Denitrifying bacteria removes fixed nitrogen i.e. nitrates from the ecosystem and returns it to the atmosphere in an inert form.
Denitrifying bacteria include Bacillus spp., Paracoccus spp. and Pseudomonas denitrificans. They transform nitrates to nitrous and nitric oxides and ultimately to gaseous nitrogen.
2NO3 → 2NO2 → 2NO → N2
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संबंधित प्रश्न
Give the schematic representation of the TCA cycle.
Define chemoautotrophs.
Long Answer Question:
Explain biological nitrogen fixation with example.
Match the following.
| Microorganism | Role Played |
| Nitrosomonas | Nitrogen fixation |
| Azotobacter | Ammonification |
| Pseudomonas species | Nitrification |
| Putrefying bacteria | Denitrification |
Which free living microorganism helps in nitrogen fixation?
Give reason for the following.
Farmers prefer to grow beans and peas in nitrogen deficient soils.
In the nitrogen cycle, which of the following play an important role?
Free-living soil bacteria such as Pseudomonas sp. are responsible for the ______ process in the nitrogen cycle.
Draw a neat flow chart of the Nitrogen cycle. Briefly explain the various processes involved in the nitrogen cycle.
How are organisms like Pseudomonas and Thiobacillus of great significance in nitrogen cycle?
