Which part of the cell wall is chiefly made up of calcium pectate ?

Options

A. 1. Primary wall
B. 2. Middle lamella
C. 3. Secondary wall
D. 4. Middle lamella primary wall

Answer

To answer the question "Which part of the cell wall is chiefly made up of calcium pectate?", we can break down the information step by step:

### Step-by-Step Solution:

1. **Understanding Cell Wall Structure**:
- The cell wall is a characteristic feature of plant cells, unlike animal cells which lack a cell wall.

2. **Identifying Layers of the Cell Wall**:
- The cell wall consists of several layers: the primary wall, the secondary wall, and the middle lamella.

3. **Primary and Secondary Walls**:
- The primary wall is the first layer and is primarily composed of cellulose.
- The secondary wall, which lies inside the primary wall, is also made up of cellulose.

4. **Focusing on the Middle Lamella**:
- The middle lamella is the layer that separates adjacent plant cells. It is located outside the primary wall.

5. **Composition of the Middle Lamella**:
- The middle lamella is chiefly composed of calcium pectate, which is a substance that helps in binding the cells together and provides stability.

6. **Conclusion**:
- Therefore, the part of the cell wall that is chiefly made up of calcium pectate is the **middle lamella**.

### Final Answer:
The part of the cell wall chiefly made up of calcium pectate is the **middle lamella**.