In `C_(4)` plants , mesophyll cells and bundle sheath cells are specialized to perform, respectively,

Options

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

Answer

To answer the question regarding the specialization of mesophyll cells and bundle sheath cells in C4 plants, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding C4 Plants**:
- C4 plants have a unique photosynthetic pathway that includes two types of cells: mesophyll cells and bundle sheath cells.

2. **Role of Mesophyll Cells**:
- Mesophyll cells are primarily involved in the light-dependent reactions of photosynthesis. This is where sunlight is captured and converted into chemical energy (ATP and NADPH).

3. **Role of Bundle Sheath Cells**:
- Bundle sheath cells are specialized to carry out the light-independent reactions, also known as the Calvin cycle or dark reactions. In these cells, the ATP and NADPH produced in the mesophyll cells are used to fix carbon dioxide into organic molecules.

4. **Conclusion**:
- Therefore, in C4 plants, mesophyll cells specialize in performing the light reactions, while bundle sheath cells specialize in performing the dark reactions.

### Final Answer:
In C4 plants, mesophyll cells are specialized to perform light reactions, and bundle sheath cells are specialized to perform dark reactions.