Which of the following tissues has dead cells with thick and lignified cells walls, having a few or numerous pits?

Options

A. Sclerenchyma
B. Collenchyma
C. Phloem
D. None of these

Explanation

To answer the question regarding which tissue has dead cells with thick and lignified cell walls, having a few or numerous pits, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Types of Tissues**:
- We need to consider the different types of plant tissues that could fit the description provided in the question. The main types of tissues to consider are sclerenchyma, collenchyma, and phloem.

2. **Examine Collenchyma**:
- Collenchyma is a type of tissue that provides mechanical support. However, its cell walls are not lignified; they are primarily composed of cellulose and pectin. Therefore, collenchyma does not fit the criteria of having thick and lignified cell walls.

3. **Examine Phloem**:
- Phloem is responsible for the transport of food (sugars) in plants. It contains several types of cells, including phloem fibers. While phloem fibers are dead, they do not have thick lignified walls as their primary function is not structural support.

4. **Examine Sclerenchyma**:
- Sclerenchyma is a type of tissue that provides mechanical support and is characterized by having dead cells with thick, lignified cell walls. The presence of pits in the cell walls is also a characteristic feature of sclerenchyma.

5. **Conclusion**:
- Based on the analysis, the tissue that has dead cells with thick and lignified cell walls, and may have a few or numerous pits, is **sclerenchyma**.

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

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