Presence of sheathing leafbase covering the stem partially or wholly is the characteristic of certain

Options

A. Monocots
B. Fern
C. Cycas
D. Dicots

Answer

To answer the question regarding the presence of a sheathing leaf base that covers the stem partially or wholly, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Sheathing Leaf Bases**:
- A sheathing leaf base is a structure where the base of the leaf wraps around the stem. This is a common feature in certain plant groups.

2. **Identifying Plant Groups**:
- There are two major groups of flowering plants: monocots (monocotyledons) and dicots (dicotyledons). We need to determine which group exhibits the characteristic of sheathing leaf bases.

3. **Characteristics of Monocots**:
- Monocots typically have leaves with parallel venation. This means that the veins run parallel to each other along the length of the leaf.
- In monocots, the leaf bases often form a sheath that encircles the stem, providing support and protection.

4. **Characteristics of Dicots**:
- Dicots usually have leaves with a net-like or reticulate venation pattern. The leaf bases do not typically form a sheath around the stem.

5. **Conclusion**:
- Based on the characteristics discussed, the presence of a sheathing leaf base that covers the stem partially or wholly is a defining feature of monocots.

6. **Final Answer**:
- Therefore, the correct answer to the question is that this characteristic is found in **monocots**.