The co-oprative photosynthesis is found in

Options

A. `C_(4)`-plants
B. `C_(3)`-plants
C. `C_(2)`-plants
D. Succulents.

Answer

### Step-by-Step Solution:

1. **Understanding Cooperative Photosynthesis**:
- Cooperative photosynthesis refers to a process where different cells or structures within a plant work together to enhance the efficiency of photosynthesis.

2. **Identifying Plant Types**:
- The question provides four options: C4 plants, C3 plants, C2 plants, and skeletons. We need to determine which of these types of plants exhibits cooperative photosynthesis.

3. **C4 Plants**:
- C4 plants are known for their unique photosynthetic pathway that minimizes photorespiration. They have a specialized structure called Kranz anatomy, which consists of two types of cells: mesophyll cells and bundle sheath cells.

4. **Role of Mesophyll and Bundle Sheath Cells**:
- In C4 plants, mesophyll cells capture carbon dioxide and convert it into a four-carbon compound. This compound is then transported to the bundle sheath cells, where it is converted into sugars. This cooperation between the two cell types enhances the efficiency of photosynthesis.

5. **Conclusion**:
- Given the characteristics of C4 plants and their cooperative mechanism, we conclude that the correct answer to the question is **C4 plants**.

### Final Answer:
- Cooperative photosynthesis is found in **C4 plants**.