Cell plate which transforms into middle lamellum is secreted by

Options

A. Plasma membrane
B. Golgi complex
C. ER
D. Phragmoplast

Answer

**Step-by-Step Solution:**

1. **Understanding the Process of Cytokinesis**:
- Cytokinesis is the process where the cytoplasm of a parental cell is divided into two daughter cells. This occurs after mitosis or meiosis.
- In plant cells, this process involves the formation of a structure known as the cell plate.

2. **Formation of the Cell Plate**:
- During cytokinesis in plant cells, vesicles containing cell wall materials gather at the center of the cell and fuse to form the cell plate.
- This cell plate gradually expands outward until it fuses with the existing cell membrane, effectively dividing the cell into two.

3. **Transformation into Middle Lamella**:
- The cell plate does not remain as is; it transforms into the middle lamella, which is a layer that holds the two daughter cells together.
- The middle lamella is primarily composed of pectin, a type of polysaccharide that provides adhesion between plant cells.

4. **Role of Golgi Complex**:
- The Golgi complex is the organelle responsible for the secretion of the materials that make up the cell plate and subsequently the middle lamella.
- It packages and transports the necessary components (like pectin) to the site of cell plate formation.

5. **Conclusion**:
- The correct answer to the question is that the cell plate, which transforms into the middle lamella, is secreted by the Golgi complex.

**Final Answer**: The cell plate which transforms into the middle lamella is secreted by the Golgi complex.

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