2
Question
The organisms, which participate most actively in nitrogen cycle in nature are
The organisms, which participate most actively in nitrogen cycle in nature are
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Solution
The correct option is C Bacteria
- Bacteria help to fix atmospheric nitrogen, either independently (Azotobacter) or in a symbiotic association (Rhizobium) and make it available to the plants.
- Bacteria break down the proteins present in the bodies of plants and animals into ammonia through the process of decay.
- The next step is nitrification. This is carried out by two types of bacteria, Nitrosomonas and Nitrobacter. Nitrosomonas converts ammonia to nitrite and Nitrobacter converts nitrite to nitrate.
- The last step of the nitrogen cycle is denitrification. In this, ammonia oxidizing bacteria convert nitrates into nitrogen.
Thus, the correct answer is 'Bacteria.'
- Bacteria help to fix atmospheric nitrogen, either independently (Azotobacter) or in a symbiotic association (Rhizobium) and make it available to the plants.
- Bacteria break down the proteins present in the bodies of plants and animals into ammonia through the process of decay.
- The next step is nitrification. This is carried out by two types of bacteria, Nitrosomonas and Nitrobacter. Nitrosomonas converts ammonia to nitrite and Nitrobacter converts nitrite to nitrate.
- The last step of the nitrogen cycle is denitrification. In this, ammonia oxidizing bacteria convert nitrates into nitrogen.
Thus, the correct answer is 'Bacteria.'
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