In `C_(4)` plants , mesophyll cells and bundle sheath cells are specialized to perform, respectively
(a) Light reaction and dark reaction
(b) Dark reaction with light reaction
(c) Light reaction and photorespiration
(d) Photorespiration and dark reaction

Options

A. Light reaction and dark reaction
B. Dark reaction with light reaction
C. Light reaction and photorespiration
D. Photorespiration and dark reaction

Answer

To solve the question regarding the specialization of mesophyll cells and bundle sheath cells in C4 plants, we can break it down 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 light intensity and temperature.

2. **Identifying Cell Types**:
- In C4 plants, there are two main types of cells involved in photosynthesis:
- **Mesophyll Cells**: These cells are located near the surface of the leaf and are primarily involved in capturing light energy and the initial fixation of carbon dioxide.
- **Bundle Sheath Cells**: These cells surround the vascular bundles and are involved in the Calvin cycle (dark reactions) where the fixed carbon dioxide is converted into sugars.

3. **Processes in Each Cell Type**:
- **Mesophyll Cells**:
- Perform the **light reactions** of photosynthesis, which convert light energy into chemical energy (ATP and NADPH).
- **Bundle Sheath Cells**:
- Carry out the **dark reactions** (Calvin cycle), where the ATP and NADPH produced in the light reactions are used to fix carbon dioxide and synthesize glucose.

4. **Conclusion**:
- Based on the functions of these cells, the correct answer is that mesophyll cells are specialized for the light reaction, while bundle sheath cells are specialized for the dark reaction.

### Final Answer:
(a) Light reaction and dark reaction

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