Photorespiration occurs in

Options

A. Ribosomes
B. Mitochondria
C. Peroxisomes
D. Lysosomes.

Answer

**Step-by-Step Solution:**

1. **Understanding Photorespiration:**
- Photorespiration is a process that occurs in plants, characterized by the loss of fixed carbon as carbon dioxide (CO2) in the presence of light. It is often referred to as the C2 cycle.

2. **Identifying the Location:**
- The process of photorespiration initiates in the chloroplasts but primarily occurs in the peroxisomes.

3. **Analyzing the Options:**
- The question provides four options:
1. Ribosomes
2. Mitochondria
3. Peroxisomes
4. Lysosomes

4. **Evaluating Each Option:**
- **Ribosomes:** These are the sites of protein synthesis and are not involved in photorespiration. Therefore, this option is incorrect.
- **Mitochondria:** Known as the powerhouse of the cell, mitochondria are where ATP is produced. They do not participate in photorespiration, making this option incorrect.
- **Peroxisomes:** This is where photorespiration primarily occurs. It is the correct answer.
- **Lysosomes:** These are known as the "suicidal bags" of the cell, involved in digestion and waste removal, and are not related to photorespiration. Thus, this option is incorrect.

5. **Conclusion:**
- Based on the analysis, the correct answer is that photorespiration occurs in **peroxisomes**.