Leaf base is sheathing in

Options

A. Wheat
B. Maize
C. Grass
D. All the above.

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Sheathening":**
- The term "sheathening" refers to the way the leaf base wraps around or envelops the stem of the plant. This is particularly common in certain types of plants, especially monocots.

2. **Identifying Monocot Plants:**
- Monocots are a group of flowering plants that have one seed leaf (cotyledon). Examples include wheat, maize, and grass. These plants exhibit sheathening in their leaf bases.

3. **Describing the Leaf Base:**
- The leaf base is also known as the petiole. In monocots, the petiole is modified to form a sheath that encircles the stem.

4. **Function of Sheathening:**
- The primary function of the sheathing leaf base is to protect the intercalary meristem, which is a region of growth in the plant. This protection is crucial for the plant's growth and development.

5. **Conclusion:**
- Therefore, the leaf base is sheathing in monocots like wheat, maize, and grass, and this adaptation serves to protect vital growth tissues.