In photorespiration, glycine passes from
(a) Chloroplast to peroxisome
(b) Chloroplast to mitochondrion
(c) Peroxisome to mitochondrion
(d) Mitochondrion to peroxisome

Options

A. Chloroplast to peroxisome
B. Chloroplast to mitochondrion
C. Peroxisome to mitochondrion
D. Mitochondrion to peroxisome.

Answer

To solve the question regarding the movement of glycine during photorespiration, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Photorespiration**:
- Photorespiration is a process that occurs in plants when the concentration of oxygen is higher than that of carbon dioxide. It is considered a wasteful pathway as it leads to the production of compounds that do not contribute to photosynthesis.

2. **Identifying Key Organelles**:
- The major organelles involved in photorespiration are the chloroplast, peroxisome, and mitochondria. Each plays a specific role in the conversion of compounds during this process.

3. **Formation of Glycine**:
- Initially, ribulose bisphosphate (RUBP) reacts with oxygen instead of carbon dioxide due to the conditions mentioned above. This reaction produces phosphoglycolate, which is then converted into glycolate in the chloroplast.

4. **Transfer of Glycolate**:
- Glycolate is then transported from the chloroplast to the peroxisome, where it is further processed.

5. **Conversion to Glycine**:
- In the peroxisome, glycolate is converted into glycine. This is a crucial step in the photorespiration pathway.

6. **Movement of Glycine**:
- After glycine is formed in the peroxisome, it is then transferred to the mitochondria. In the mitochondria, glycine is converted into serine.

7. **Final Conclusion**:
- Therefore, the correct answer to the question is that glycine passes from the peroxisome to the mitochondrion.

### Final Answer:
(c) Peroxisome to mitochondrion

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