Which of the following is made up of dead cells

Options

A. Xylem parenchyma
B. Collenchyma
C. Phellem
D. Phloem

Answer

To determine which of the following options is made up of dead cells, we will analyze the types of tissues mentioned in the question.

### Step-by-Step Solution:

1. **Identify the Options**: The question asks to identify which of the following is made up of dead cells. The options provided are likely to include xylem parenchyma, collenchyma, phloem, and sclerenchyma.

2. **Understand the Types of Tissues**:
- **Xylem Parenchyma**: This is a type of parenchyma tissue found in the xylem. It is composed of living cells that are involved in storage and transport of water and nutrients.
- **Collenchyma**: This tissue is also made up of living cells and provides support to the plant, especially in young stems and leaves.
- **Phloem**: This is a vascular tissue responsible for the transport of nutrients, particularly sugars. It is composed of living cells.
- **Sclerenchyma**: This tissue is made up of dead cells that provide structural support to the plant. It is characterized by thick, lignified cell walls.

3. **Identify the Correct Answer**: Among the options, sclerenchyma is the only tissue that is made up of dead cells. Therefore, the correct answer to the question is sclerenchyma.

### Final Answer:
The tissue made up of dead cells is **Sclerenchyma**.