Which of the following feature is associated with `C_4` plant

Options

A. High photorespiration
B. All green cells posses calvin cycle enzymes
C. Ability to tolerate high temperature
D. O.A.A. is the initial product of `CO_2` fixation in bundle sheath cells

Answer

To determine which feature is associated with C4 plants, let's analyze the provided options step by step.

### Step-by-Step Solution:

1. **Understanding C4 Plants**: C4 plants have a unique photosynthetic pathway that allows them to efficiently fix carbon dioxide in conditions of high temperature and light intensity. They possess two types of photosynthetic cells: mesophyll cells and bundle sheath cells.

2. **Evaluating the Options**:
- **Option 1: High photorespiration**: C4 plants actually have low photorespiration due to their efficient carbon fixation mechanism. Therefore, this option is incorrect.
- **Option 2: All green cells possess Calvin cycle enzymes**: The Calvin cycle enzymes are primarily present in the mesophyll cells of C4 plants, not in all green cells. Thus, this option is also incorrect.
- **Option 3: Ability to tolerate high temperature**: C4 plants are well adapted to high temperatures and can efficiently photosynthesize under such conditions. This option is correct.
- **Option 4: OAA is the initial product of CO2 fixation in bundle sheath cells**: OAA (oxaloacetate) is actually formed in the mesophyll cells and is not the initial product in bundle sheath cells. This option is incorrect.

3. **Conclusion**: The only feature that accurately describes C4 plants is their ability to tolerate high temperatures.

### Final Answer:
The feature associated with C4 plants is their **ability to tolerate high temperature**.

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