Eustele condition is found in the stem of

Options

A. dicots
B. monocots
C. ferns
D. pteridophytes

Answer

**Step-by-Step Solution:**

1. **Understanding Eustele Condition:**
- Eustele is a specific arrangement of vascular bundles in plants. In this condition, vascular bundles are organized in a ring formation around a central pith.

2. **Identifying Key Features of Eustele:**
- The vascular bundles in eustele are located inner to the pericycle.
- They are arranged in a definite number, meaning there is a specific count of vascular bundles.
- The vascular bundles are obtusely wedge-shaped, with xylem positioned towards the inner side and phloem towards the outer side.

3. **Presence of Cambium:**
- An important characteristic of eustele is the presence of a cambium strip between the xylem and phloem, which allows for secondary growth. This makes the vascular bundles "open" for growth.

4. **Identifying the Plant Group:**
- Eustele is typically found in dicotyledons (dicots). This is in contrast to monocots, where vascular bundles are scattered and do not form a ring.

5. **Conclusion:**
- Based on the characteristics of eustele and its association with dicots, we conclude that the eustele condition is found in the stem of dicots.

**Final Answer:**
Eustele condition is found in the stem of dicots.

---