Carbon assimilation occurs in bundle sheath cells of

Options

A. `CAM` plants
B. `C_(4)` plants
C. `C_(3)` plants
D. All the above.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where carbon assimilation occurs in relation to bundle sheath cells. We need to identify which type of plants utilize bundle sheath cells for this process.

2. **Identifying Plant Types**:
- **C3 Plants**: These plants perform the Calvin cycle directly in the mesophyll cells without a separation of light-dependent and light-independent reactions.
- **C4 Plants**: In these plants, the light-dependent reactions occur in mesophyll cells, while the Calvin cycle (carbon assimilation) takes place in bundle sheath cells.
- **CAM Plants**: These plants also separate the timing of carbon fixation but do it differently by opening their stomata at night.

3. **Analyzing the Options**:
- The options given are CAM plants, C4 plants, C3 plants, or all the above.
- Since C4 plants specifically utilize bundle sheath cells for carbon assimilation, they are the primary focus.

4. **Conclusion**: Based on the separation of processes in C4 plants, we conclude that carbon assimilation occurs in bundle sheath cells specifically in C4 plants.

5. **Final Answer**: Carbon assimilation occurs in bundle sheath cells of **C4 plants**.

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