Vessels and companion cells are characteristic feature of

Options

A. Angiosperm
B. Gymnosperm
C. Bryophyta
D. All

Answer

To determine the correct answer to the question regarding the characteristic features of vessels and companion cells, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- **Vessels**: These are specialized structures in the xylem tissue of plants that conduct water and minerals.
- **Companion Cells**: These are specialized cells in the phloem tissue that assist in the transport of nutrients and are closely associated with sieve tube elements.

2. **Identify the Plant Groups**:
- **Angiosperms**: These are flowering plants that have both vessels and companion cells.
- **Gymnosperms**: These are non-flowering plants, such as conifers, which typically do not have vessels.
- **Bryophyta**: This group includes mosses and liverworts, which also lack vessels and companion cells.

3. **Analyze the Options**:
- **Option 1: Angiosperms**: Known to have both vessels and companion cells.
- **Option 2: Gymnosperms**: Generally lack vessels and companion cells.
- **Option 3: Bryophyta**: Also lack vessels and companion cells.
- **Option 4: All of the above**: This option is incorrect since not all groups have vessels and companion cells.

4. **Conclusion**:
- Based on the definitions and characteristics of the plant groups, the presence of vessels and companion cells is a defining feature of **Angiosperms**.

### Final Answer:
The correct answer is **Angiosperms** (Option 1).

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