This layer holds the neighbouring cell walls together

Options

A. middle lamella
B. primary cell wall
C. secondary cell wall
D. cell coat

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the layer that holds the neighboring cell walls together. This indicates that we are looking for a structure that connects two adjacent cells.

2. **Identifying Options**: The options typically include terms related to plant cell structure, such as middle lamella, primary cell wall, secondary cell wall, and possibly others.

3. **Defining Middle Lamella**: The middle lamella is a layer that exists between the cell walls of two adjacent plant cells. It is primarily composed of pectins and serves as a cementing substance that holds the cells together.

4. **Formation of Middle Lamella**: The middle lamella is formed during cell division. When a new cell plate is created during cytokinesis, it eventually develops into the middle lamella, connecting the primary cell walls of the two new daughter cells.

5. **Comparing Other Options**:
- The **primary cell wall** is the outermost layer of a single plant cell and does not connect to neighboring cells.
- The **secondary cell wall** is formed inside the primary cell wall and also does not serve to connect adjacent cells.
- The **cell coat** is a term that generally refers to the outer layer of a cell but does not specifically describe a structure that holds neighboring cells together.

6. **Conclusion**: Based on the definitions and functions of the structures discussed, the correct answer to the question is the **middle lamella**, as it is specifically designed to hold neighboring cell walls together.

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