Twiners climb over the support with the help of

Options

A. Adventitious roots
B. Tendrils
C. Stem itself
D. Hooks

Answer

**Step-by-Step Solution:**

1. **Understanding Twiners**: Twiners are plants that have a growth habit allowing them to climb over supports. They are often seen in plants like pea plants.

2. **Identifying the Mechanism of Climbing**: Twiners utilize specific structures to aid in climbing. In the case of pea plants, these structures are known as tendrils.

3. **Role of Tendrils**: Tendrils are specialized, thin, and curling structures that emerge from the plant. When a twiner encounters a support, the tendrils curl around it.

4. **Climbing Process**: As the tendrils wrap around the support, they help the plant to ascend. This allows the plant to reach sunlight and grow more effectively.

5. **Conclusion**: The primary mechanism by which twiners climb is through the action of their tendrils, which are extensions of the stem. Therefore, the answer to the question is that twiners climb over the support with the help of their **stem itself**.

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