Pseudomonas bacteria convert nitrate to .....................

Explanation

**Step-by-Step Solution:**

1. **Identify the Type of Bacteria**: Pseudomonas is classified as a denitrifying bacterium. Denitrifying bacteria are known for their role in the nitrogen cycle, specifically in the process of denitrification.

2. **Understand the Process of Denitrification**: Denitrification is a process where nitrates (NO3-) are converted into nitrogen gas (N2) or nitrous oxide (N2O) under anaerobic conditions (absence of oxygen).

3. **Role of Pseudomonas in Nitrogen Cycle**: Pseudomonas bacteria utilize nitrate as an electron acceptor instead of oxygen during their metabolic processes. This allows them to convert nitrate into nitrogen gas.

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