In grapevine tendrils are the modified

Options

A. Leaflets
B. Axillary buds
C. Terminal buds
D. Petioles

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure of Grapevine**:
- Grapevine is a climbing plant that requires support to grow. It has specialized structures called tendrils that help it cling to supports.

2. **Identifying Tendril Modifications**:
- In grapevine, tendrils are modified structures. The question asks how these tendrils are modified.

3. **Exploring Different Structures**:
- **Leaflets**: These are small leaf-like structures (folioles) but are not actual leaves. They are not the modification we are looking for.
- **Axillary Buds**: These are small bud-like structures that emerge where a leaf attaches to the stem. They can help in forming new plants but are not the modification of tendrils.
- **Terminal Buds**: These are the dominant buds at the tip of the stem where new growth occurs. In grapevine, tendrils develop from these terminal buds through cell division and growth.
- **Petiole**: This is the stalk that connects the leaf to the stem. It is not modified into tendrils in grapevine.

4. **Conclusion**:
- The correct answer is that in grapevine, tendrils are modified from terminal buds.

5. **Final Answer**:
- Therefore, the modified structure of tendrils in grapevine is the terminal bud.

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