The function of vessels is

Options

A. Conduction of water and mineral
B. Conduction of food
C. Mechanical strength
D. All of the above

Answer

### Step-by-Step Solution

1. **Identify the Type of Plant**:
- Vessels are a component of xylem and are found only in angiospermic plants (flowering plants).

2. **Understand the Role of Xylem**:
- Xylem is responsible for the conduction of water and minerals from the roots to the rest of the plant.

3. **Components of Xylem**:
- Xylem consists of two main components:
- **Tracheids**: Present in lower plants and gymnosperms.
- **Vessels**: Present only in higher plants, specifically angiosperms.

4. **Function of Vessels**:
- The primary function of vessels is to conduct water and minerals.

5. **Eliminate Incorrect Options**:
- Conduction of food is done by phloem, not xylem.
- Vessels do not provide mechanical strength.
- Therefore, options that suggest functions other than the conduction of water and minerals can be eliminated.

6. **Conclusion**:
- The correct answer to the question "The function of vessels is" is to conduct water and minerals.

### Final Answer
- The function of vessels is to conduct water and minerals.