Choose the correct one for photorespiration that occurs in `C_(3)` plants.

Options

A. Photorespiration is common in plants having high `CO_(2)`compensation point
B. Photorespiration is caused by high `CO_(2)` and low `O_(2)`
C. It is not affected by light, temperature
D. all of the above

Answer

**Step-by-Step Solution:**

1. **Understanding Photorespiration in C3 Plants**:
- Photorespiration is a process that occurs in C3 plants where the enzyme RuBisCO catalyzes the reaction of RuBP (ribulose bisphosphate) with oxygen instead of carbon dioxide. This results in the production of a molecule of phosphoglycerate (PGA) and a molecule of phosphoglycolate, which is not useful for the plant.

2. **Identifying the Wastefulness of Photorespiration**:
- In normal photosynthesis, RuBP combines with CO2 to produce two molecules of 3-phosphoglycerate (3-PGA). However, during photorespiration, the fixation of CO2 is reduced, leading to a less efficient process and the production of an unnecessary byproduct (phosphoglycolate).

3. **Analyzing the Given Options**:
- The question provides several statements about photorespiration:
- A) Photorespiration is common in plants having a high CO2 compensation point.
- B) Photorespiration is caused by high CO2 and low oxygen.
- C) It is not affected by light and temperature.
- D) All of the above.

4. **Evaluating Each Statement**:
- **Statement A**: True. Photorespiration is indeed more common in plants with a high CO2 compensation point.
- **Statement B**: False. Photorespiration is not caused by high CO2; rather, it is influenced by high temperatures and low CO2 availability.
- **Statement C**: False. Photorespiration is affected by light and temperature. Increased temperature can enhance the rate of photorespiration in C3 plants.
- **Statement D**: False. Since statements B and C are incorrect, this option cannot be true.

5. **Conclusion**:
- The correct statement regarding photorespiration in C3 plants is **A)** Photorespiration is common in plants having a high CO2 compensation point.