Cells of this tissue are living and show angular wall thickning. They also provide mechanical support. The tissue is

Options

A. xylem
B. sclerenchyma
C. collenchyma
D. epidermis

Answer

To solve the question regarding the tissue that consists of living cells with angular wall thickening and provides mechanical support, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Characteristics of the Tissue**:
- The tissue is composed of living cells.
- The cells exhibit angular wall thickening.
- The tissue provides mechanical support to the plant.

2. **Consider Different Plant Tissues**:
- **Xylem**: This is a vascular tissue responsible for the transport of water and minerals. However, it primarily consists of dead cells in its mature form and does not fit the criteria of living cells with angular thickening.
- **Sclerenchyma**: This tissue is known for providing mechanical support but is made up of dead cells due to the deposition of a thick secondary wall. Therefore, it does not meet the requirement of being composed of living cells.
- **Cholenchyma**: This tissue is characterized by living cells that have angular wall thickening. The cells are flexible and provide mechanical support to the plant, especially in young and growing parts.
- **Epidermis**: This is a protective layer of cells that does not provide mechanical support in the same way as the other tissues.

3. **Conclusion**:
- Based on the characteristics and the analysis of the different tissues, the correct answer is **Cholenchyma**. This tissue has living cells with angular wall thickening and provides mechanical support to the plant.

### Final Answer:
The tissue is **Cholenchyma**.

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