Cell organelle taking part in photorespiration is

Options

A. Ribosome
B. Dictyosome
C. Peroxisome
D. Glyoxisome

Answer

To answer the question regarding which cell organelle is involved in photorespiration, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Photorespiration**:
- Photorespiration is a process that occurs in plants, particularly in C3 plants. It is often considered a wasteful pathway because it does not produce useful energy or sugars.

2. **Identify the Role of Rubisco**:
- The enzyme ribulose 1,3-bisphosphate carboxylase/oxygenase (commonly known as Rubisco) plays a crucial role in photorespiration. It catalyzes the reaction that leads to the oxygenation of ribulose bisphosphate.

3. **Recognize the Organelles Involved**:
- Photorespiration occurs in three main organelles: chloroplasts, mitochondria, and peroxisomes.
- Chloroplasts are involved in the initial steps of photosynthesis and photorespiration.
- Mitochondria are involved in the respiration process.
- Peroxisomes are crucial for the breakdown of hydrogen peroxide and play a significant role in the photorespiration process.

4. **Evaluate the Options**:
- Given the options: ribosome, dictyosome, peroxisome, and glyoxosome, we need to identify which of these is involved in photorespiration.
- Ribosomes are involved in protein synthesis, dictyosomes (Golgi apparatus) are involved in packaging and transporting proteins, and glyoxosomes are involved in the conversion of fatty acids to carbohydrates in plants.

5. **Conclusion**:
- The correct answer is **peroxisome**, as it is one of the organelles involved in the photorespiration process.

### Final Answer:
The cell organelle taking part in photorespiration is **peroxisome**.