which one of the following has dead cells

Options

A. collenchyma
B. chlorenchyma
C. periderm
D. endodermis

Answer

To determine which of the following plant tissues contains dead cells, we will analyze each option provided: cholenchyma, chlorenchyma, periderm, and endodermis.

### Step-by-Step Solution:

1. **Identify the Tissues**:
- We have four tissues to consider: cholenchyma, chlorenchyma, periderm, and endodermis.

2. **Analyze Cholenchyma**:
- Cholenchyma is a type of ground tissue that consists of living cells. It is primarily found in the younger parts of the plant and provides support while allowing for growth. Therefore, it does not contain dead cells.

3. **Analyze Chlorenchyma**:
- Chlorenchyma is another type of ground tissue that contains living cells, specifically those with a high number of chloroplasts. This tissue is involved in photosynthesis. Thus, chlorenchyma also does not have dead cells.

4. **Analyze Periderm**:
- Periderm is a protective tissue that replaces the epidermis in older stems and roots. It is a multilayered tissue that contains both living and dead cells. The dead cells in periderm contribute to its protective function, making it the only tissue among the options that contains dead cells.

5. **Analyze Endodermis**:
- The endodermis is a layer of cells that surrounds the vascular tissue in roots. It is composed of living cells, typically barrel-shaped, and functions in regulating the flow of water and nutrients. Therefore, it does not contain dead cells.

6. **Conclusion**:
- Based on the analysis, the only tissue that contains dead cells is **periderm**.

### Final Answer:
The correct answer is **periderm**.