A strong, sharp-pointed woody structure mostly arising from the wood and have connection with xylem elements of a stem, is called :

Options

A. thorn
B. prickle
C. tendril
D. all of these

Explanation

To solve the question, we need to identify the correct term for a "strong, sharp-pointed woody structure mostly arising from the wood and have connection with xylem elements of a stem." Let's break down the options provided:

1. **Understanding the Characteristics:**
- The structure is described as "strong" and "sharp-pointed."
- It is "woody" and arises from the wood.
- It has a connection with the xylem elements of a stem.

2. **Analyzing the Options:**
- **Thorn:** A thorn is a modified branch that arises from the nodes or internodes of the stem. It is indeed strong, sharp, and woody, and it has a connection with the xylem. Thorns serve the purpose of protecting the plant from herbivores.
- **Tendril:** A tendril is a slender, twining structure that helps the plant to climb and seek support. Tendrils are not woody; they are soft and flexible, making them unsuitable for this description.
- **Prickle:** Prickles are sharp outgrowths from the epidermis or bark of a plant. They are not as woody as thorns and do not have a direct connection with the xylem.
- **All of these:** This option suggests that all the previous structures fit the description, which is not accurate based on the characteristics provided.

3. **Conclusion:**
- Based on the analysis, the correct answer is **thorn**. Thorns are the only structures that meet all the criteria mentioned in the question.

**Final Answer:** Thorn

---