Bacteria used to convert amino ammonium compounds:

Options

A. Ammonifying bacteria
B. Nitrifying bacteria
C. Symbiotic bacteria
D. Denitrifying bacteria

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about bacteria that convert amino ammonium compounds. This involves understanding the nitrogen cycle and the role of bacteria in this process.

2. **Nitrogen in Plants and Animals**: Plants absorb nitrogen from the soil, which they get from microorganisms, including bacteria. Animals then consume these plants, thus obtaining nitrogen.

3. **Decomposition**: When plants and animals die, they decompose. During decomposition, bacteria break down the organic matter, leading to the production of ammonia. This process is known as ammonification.

4. **Ammonification**: The bacteria that convert organic nitrogen (from dead plants and animals) into ammonia are called **ammonifying bacteria**.

5. **Conversion of Ammonia**: The ammonia produced can then be further processed. It is converted into nitrites and then into nitrates through a process called nitrification.

6. **Nitrification**: The bacteria responsible for this conversion from ammonia to nitrites and then to nitrates are known as **nitrifying bacteria**.

7. **Nitrate Uptake by Plants**: The nitrates produced are then taken up by plants, continuing the nitrogen cycle.

8. **Denitrification**: Some nitrates can also be converted back into atmospheric nitrogen (N2) through a process called denitrification, carried out by **denitrifying bacteria**.

9. **Final Answer**: The bacteria that convert amino ammonium compounds are known as **nitrifying bacteria**.

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