The collenchyma is thickened due to the deposition of

Options

A. Lignin
B. Cutin
C. Suberia
D. Pectin

Answer

**Step-by-Step Solution:**

1. **Understanding Collenchyma**: Collenchyma is a type of simple permanent tissue in plants. It is primarily responsible for providing mechanical support, especially in young and growing parts of the plant.

2. **Structure of Collenchyma**: The cells of collenchyma are characterized by their thickened corners. This thickness is crucial for the structural integrity of the plant.

3. **Substances Responsible for Thickening**: The thickening in collenchyma cells is due to the deposition of specific substances. The main components that contribute to the thickness are:
- **Cellulose**: A polysaccharide that forms the primary structure of the cell wall.
- **Hemicellulose**: A complex carbohydrate that provides additional support and structure.
- **Pectin**: A polysaccharide that is particularly important in the middle lamella and helps in cell adhesion.

4. **Identifying the Correct Answer**: The question asks specifically about the substance that causes the thickening in collenchyma. While cellulose and hemicellulose contribute to the overall structure, the correct answer focuses on pectin, which is primarily responsible for the thickening at the corners of collenchyma cells.

5. **Conclusion**: Therefore, the collenchyma is thickened due to the deposition of **pectin**.

**Final Answer**: The collenchyma is thickened due to the deposition of **pectin**.

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