Collenchyma can be differentiated from parenchyma by

Options

A. Cellulosic wall
B. Living protoplasm
C. Pecto-cellulosic deposits at corners
D. No protoplasm

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks how collenchyma can be differentiated from parenchyma. Both are types of plant tissues, but they have different structural characteristics.

2. **Identifying Key Characteristics**:
- **Collenchyma**: This tissue is characterized by its thickened cell walls, which provide support and flexibility to the plant. The thickening is primarily due to the presence of pectin and hemicellulose.
- **Parenchyma**: This tissue has thinner cell walls and is generally involved in storage, photosynthesis, and tissue repair. Its walls are not as thickened as those of collenchyma.

3. **Analyzing the Cell Wall Composition**:
- In collenchyma, the cell walls are thickened at the corners where the cells meet, due to pectosilulosic deposits.
- In parenchyma, the cell walls are uniform and lack the specific thickening found in collenchyma.

4. **Conclusion**: The primary differentiating factor between collenchyma and parenchyma is the presence of pectosilulosic deposits at the corners of collenchyma cells, which are not found in parenchyma cells.

5. **Final Answer**: Collenchyma can be differentiated from parenchyma by the presence of pectosilulosic deposits at the corners of the cells.