Nitrosomonas, Nitrococcus and Nitrocystis are involved in the process of

Options

A. Ammonification
B. Nitrate assimilation
C. Nitrification
D. Denitrification

Answer

**Step-by-Step Solution:**

1. **Identify the Organisms:** The question mentions three specific microorganisms: Nitrosomonas, Nitrococcus, and Nitrocystis.

2. **Understand Their Role:** These microorganisms are involved in the nitrogen cycle, specifically in the process of nitrification.

3. **Define Nitrification:** Nitrification is a two-step process in which ammonia (NH3) is converted into nitrate (NO3-).

4. **First Step of Nitrification:**
- The first step involves the oxidation of ammonia (NH3) to nitrite (NO2-).
- This step is primarily carried out by Nitrosomonas.

5. **Second Step of Nitrification:**
- The second step involves the oxidation of nitrite (NO2-) to nitrate (NO3-).
- This step is primarily carried out by Nitrococcus and Nitrocystis.

6. **Conclusion:** Therefore, the correct answer to the question is that Nitrosomonas, Nitrococcus, and Nitrocystis are involved in the process of nitrification.

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