During the formation of cell wall the first formed layer of cellulose secreted by Golgi bodies is

Options

A. middle lamella
B. Primary wall
C. Tertiary wall
D. `S_(1)` layer of secondary wall

Answer

To answer the question regarding the first formed layer of cellulose secreted by Golgi bodies during the formation of the cell wall, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Cell Wall Formation**: The cell wall is a crucial structure in plant cells, providing support and protection. It is primarily composed of cellulose.

2. **Role of Golgi Bodies**: The Golgi apparatus plays a significant role in the synthesis and secretion of polysaccharides, which are important for building the cell wall.

3. **Identifying the Layers of the Cell Wall**: The cell wall consists of different layers:
- **Middle Lamella**: The layer that acts as a glue between adjacent cells.
- **Primary Wall**: The first layer of the cell wall that is formed and is flexible.
- **Secondary Wall**: Formed later, it is thicker and provides more strength.
- **Tertiary Wall**: This is less commonly referred to and is not typically part of the primary structure.

4. **Determining the First Layer**: The question specifically asks for the first formed layer of cellulose. The primary wall is the first layer that is secreted by the Golgi bodies.

5. **Conclusion**: Therefore, the correct answer is the **Primary Wall**.

### Final Answer:
The first formed layer of cellulose secreted by Golgi bodies during the formation of the cell wall is the **Primary Wall**.

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