Ammonia is produced during

Options

A. Photorespiration
B. `CAM`
C. Dark respiration
D. All the above.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the process during which ammonia is produced. We need to analyze each option provided.

2. **Analyzing Photorespiration**:
- Photorespiration occurs when the enzyme Rubisco fixes oxygen instead of carbon dioxide.
- This process leads to the formation of phosphoglycolate and three-phosphoglycerate.
- During subsequent reactions, two molecules of glycine are converted to serine, resulting in the production of ammonia and carbon dioxide.
- Therefore, ammonia is produced during photorespiration.

3. **Analyzing CAM (Crassulacean Acid Metabolism)**:
- CAM is a process used by plants in arid conditions where stomata are closed during the day and open at night.
- This adaptation helps in conserving water, but ammonia is not produced during this process.
- Thus, CAM does not lead to ammonia production.

4. **Analyzing Dark Respiration**:
- Dark respiration refers to the process of aerobic respiration that occurs in the absence of sunlight.
- In this process, carbon dioxide is produced, but ammonia is not generated.
- Hence, dark respiration does not produce ammonia.

5. **Conclusion**:
- Based on the analysis, the only process that results in the production of ammonia is photorespiration.
- Therefore, the correct answer is that ammonia is produced during **photorespiration**.

**Final Answer**: Ammonia is produced during photorespiration.

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