Precursor of cell plate is

Options

A. Phragmoplast
B. Middle lamellum
C. Primary cell wall
D. Secondary cell wall

Answer

To answer the question "What is the precursor of the cell plate?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Cell Plate Formation**:
- The cell plate is formed during cytokinesis in plant cells. It is crucial for dividing the cell into two daughter cells.

2. **Identifying the Options**:
- The options given are:
- A) Fragmoplast
- B) Middle lamellum
- C) Primary cell wall
- D) Secondary cell wall

3. **Analyzing Each Option**:
- **Middle Lamellum**: This structure is important for cell wall formation but is not specifically a precursor to the cell plate. It serves as a cementing layer between the primary walls of adjacent cells.
- **Primary Cell Wall**: This is the first layer of the cell wall formed during cell division but is not a precursor to the cell plate.
- **Secondary Cell Wall**: This is formed after the primary cell wall and is not involved in the formation of the cell plate.

4. **Focusing on Fragmoplast**:
- The Fragmoplast is a plant-specific structure that forms during late cytokinesis. It is composed of microtubules and actin filaments, which provide a framework for the assembly of the cell plate.

5. **Conclusion**:
- Based on the analysis, the correct answer is **A) Fragmoplast**, as it is the precursor of the cell plate during cytokinesis in plant cells.

### Final Answer:
The precursor of the cell plate is **Fragmoplast**.