Middle lamellum is chemically rich in

Options

A. Suberin
B. Pectin
C. Chitin
D. Lignin

Answer

**Step-by-Step Solution:**

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

2. **Chemical Composition**: The middle lamella is primarily composed of various substances, but it is particularly noted for its chemical richness.

3. **Identifying Key Components**: Among the options provided (suberine and pectin, chitin, lignin), we need to identify which substance is most abundant in the middle lamella.

4. **Focus on Pectin**: The middle lamella is known to be rich in pectin, specifically calcium and magnesium pectinate. Pectin is a polysaccharide that helps in cell adhesion and is a significant component of the middle lamella.

5. **Other Components**: While the middle lamella may contain small amounts of other substances such as cellulose and lignin, these are not the primary components.

6. **Conclusion**: Based on the information, the middle lamella is chemically rich in pectin, making it the correct answer.

**Final Answer**: The middle lamella is chemically rich in **pectin**.

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