Which of the following tissues has dead cells?

Options

A. Parenchyma
B. Sclerenchyma
C. Collenchyma
D. Epithelial tissue

Explanation

To answer the question "Which of the following tissues has dead cells?", we can follow these steps:

### Step 1: Understand the Types of Tissues
- Tissues are groups of cells that perform a similar function. In plants, there are two main types of tissues: meristematic and permanent tissues.

### Step 2: Identify Meristematic Tissues
- Meristematic tissues are involved in growth and development. They consist of living cells that are actively dividing to form new cells. Therefore, they do not contain dead cells.

### Step 3: Identify Permanent Tissues
- Permanent tissues are made up of cells that have differentiated and matured to perform specific functions. They can be further classified into simple and complex tissues.

### Step 4: Explore Simple Permanent Tissues
- The three types of simple permanent tissues in plants are:
1. **Parenchyma**: Composed of living cells, involved in storage, secretion, and photosynthesis.
2. **Collenchyma**: Also made of living cells, provides mechanical support and is involved in food assimilation.
3. **Sclerenchyma**: Composed of dead cells, characterized by thickened cell walls due to lignin deposition, and is responsible for providing mechanical strength.

### Step 5: Conclusion
- Among the tissues discussed, **sclerenchyma** is the only tissue that contains dead cells. Therefore, the answer to the question is **sclerenchyma**.

### Final Answer
**Sclerenchyma is the tissue that has dead cells.**

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