Biology
Grade-10
Easy
Question
Which of the following can be termed as nitrification?
- Conversion of nitrites to nitrates
- Conversion of nitrates to nitrogen then to nitrites
- Conversion of ammonia to nitrites
- Conversion of ammonia to nitrites then to nitrates
Hint:
Nitrification is a microbial process by which reduced nitrogen compounds (primarily ammonia) are sequentially oxidized to nitrite and nitrate.
The correct answer is: Conversion of ammonia to nitrites then to nitrates
- Nitrification is the natural process that occurs in the environment by specialized autotrophic bacteria. During this aerobic process, ammonia is converted to nitrites (NO2-) and then nitrates (NO3-).
- Ammonia is present in drinking water through either naturally-occurring processes or through ammonia addition during secondary disinfection to form chloramines
- A group of specialized gram-negative, rod-shaped chemoautotrophic bacteria called Nitrosomonas helps in nitrification.
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