Which of the following tissues consist of living cells

Options

A. Vessels
B. Tracheids
C. Companion cell
D. Sclerenchyma

Answer

To determine which of the given tissues consist of living cells, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Tissues**: The options given are:
- Vessels
- Trachea
- Companion Cells
- Sclerenchyma

2. **Analyze Vessels**:
- Vessels are part of the xylem.
- Their primary function is to conduct water and minerals.
- Vessels are composed of dead cells.
- **Conclusion**: Vessels do not consist of living cells.

3. **Analyze Trachea**:
- Trachea is also part of the xylem.
- Like vessels, trachea are involved in the conduction of water.
- Trachea are made up of dead cells.
- **Conclusion**: Trachea do not consist of living cells.

4. **Analyze Companion Cells**:
- Companion cells are part of the phloem.
- They contain a nucleus and help regulate the activity of sieve tubes.
- Companion cells are living cells.
- **Conclusion**: Companion cells consist of living cells.

5. **Analyze Sclerenchyma**:
- Sclerenchyma is a type of permanent tissue.
- Its primary function is to provide mechanical support to the plant.
- Sclerenchyma consists of dead cells.
- **Conclusion**: Sclerenchyma does not consist of living cells.

6. **Final Answer**:
- Based on the analysis, the only tissue that consists of living cells is **Companion Cells**.