First stable product of photorespiration is

Options

A. phosphoglycerate
B. glycolate
C. serine
D. RuBr

Answer

**Step-by-Step Solution:**

1. **Understanding Photorespiration**:
- Photorespiration is a process that occurs in C3 plants, where the enzyme Rubisco reacts with oxygen instead of carbon dioxide when the concentration of carbon dioxide is low and oxygen concentration is high.

2. **Identifying the First Stable Product**:
- In photorespiration, the first stable product formed is glycolate. This compound is produced when Rubisco catalyzes the reaction with oxygen.

3. **Subsequent Reactions**:
- After glycolate is formed, it is converted into glycine. Glycine then undergoes further transformations to eventually produce serine.

4. **Conclusion**:
- Therefore, the first stable product of photorespiration is glycolate.

**Final Answer**: The first stable product of photorespiration is glycolate.

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