Choose the CORRECT one for photorespiration that `CO_3` compensation point

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 All of the above
D. All of the above

Answer

To solve the question regarding photorespiration and the CO2 compensation point, we can follow these steps:

### Step 1: Understand Photorespiration
Photorespiration is a process that occurs in plants where the enzyme RuBisCO oxygenates RuBP, leading to a wasteful pathway that consumes energy and releases CO2. It typically occurs when the concentration of CO2 is low and O2 is high.

**Hint:** Remember that photorespiration is a process that competes with photosynthesis, especially under certain environmental conditions.

### Step 2: Identify CO2 Compensation Point
The CO2 compensation point is the level of CO2 at which the rate of photosynthesis equals the rate of respiration. In plants with a high CO2 compensation point, photorespiration is more likely to occur because these plants can tolerate higher levels of CO2.

**Hint:** Think about how plants adapt to their environment and how CO2 levels affect their metabolic processes.

### Step 3: Analyze the Given Options
1. **Option 1:** Photorespiration is common in plants having a high CO2 compensation point.
- This statement is correct. Plants with a higher CO2 compensation point can handle more CO2, making photorespiration more likely under certain conditions.

2. **Option 2:** Photorespiration is caused by high carbon dioxide and low oxygen.
- This statement is incorrect. Photorespiration occurs under conditions of low CO2 and high O2.

3. **Option 3:** Photorespiration is not affected by light and temperature.
- This statement is incorrect. Photorespiration is indeed affected by light and temperature, as it is favored at higher temperatures.

4. **Option 4:** All of the above.
- This statement is also incorrect since not all the previous options are correct.

### Step 4: Conclusion
Based on the analysis of the options, the correct answer is **Option 1**, which states that photorespiration is common in plants having a high CO2 compensation point.

**Final Answer:** Option 1 is the correct choice.

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