Middle lamella is mainly composed of

Options

A. Hemicullulose
B. Calcium pectate
C. Muramic acid
D. Phosphoglycerides

Answer

**Step-by-Step Solution:**

1. **Understanding Middle Lamella**: The middle lamella is a layer that exists between the cell walls of adjacent plant cells. It plays a crucial role in holding these cells together.

2. **Composition of Middle Lamella**: The middle lamella is primarily composed of a substance that acts as a cementing material.

3. **Identifying the Correct Substance**: Among the options provided:
- Hemicellulose: A component of the cell wall but not the main component of the middle lamella.
- Calcium pectate: A substance known for its role in cell adhesion and is indeed a major component of the middle lamella.
- Muramic acid: Typically found in bacterial cell walls, not in plant cells.
- Phosphoglyceride: A component of cell membranes, not related to the middle lamella.

4. **Conclusion**: Based on the understanding of the middle lamella and its composition, the correct answer is **calcium pectate**.

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