Cell plate which appears during cytokinesis, ultimately transforms in :-

Options

A. Middle lamella
B. Primary wall
C. Sec. wall
D. Plasma membrane

Answer

To solve the question regarding what the cell plate transforms into during cytokinesis, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Cytokinesis**:
- Cytokinesis is the process that occurs at the end of cell division, where the cytoplasm of a parental cell is divided into two daughter cells. This process is crucial for the formation of two separate cells.

2. **Identifying the Cell Plate**:
- The cell plate is a structure that forms during cytokinesis in plant cells. It is formed by the fusion of vesicles that contain cell wall materials.

3. **Transformation of the Cell Plate**:
- As the cell plate matures, it expands outward until it fuses with the existing cell membrane. Eventually, it transforms into a structure that is integral to the formation of the cell wall.

4. **Final Structure**:
- The cell plate ultimately develops into the **middle lamella**, which is a layer that cements the cell walls of adjacent plant cells together. The middle lamella is primarily composed of pectins.

5. **Evaluating Options**:
- Given the options:
- **Option 1: Middle Lamella** - This is correct as it is the structure that the cell plate transforms into.
- **Option 2: Primary Wall** - Incorrect, as the primary wall is formed after the middle lamella.
- **Option 3: Secondary Wall** - Incorrect, as secondary walls develop later and are not formed directly from the cell plate.
- **Option 4: Plasma Membrane** - Incorrect, as the plasma membrane is not the final product of the cell plate.

6. **Conclusion**:
- Therefore, the correct answer is **Option 1: Middle Lamella**.