What are twiners?

Explanation

**Step-by-Step Solution:**

1. **Definition of Twiners**: Twiners are specific types of climbing plants that have the ability to wrap around supports as they grow. This wrapping behavior is essential for their growth and survival.

2. **Growth Habit**: Twiners typically exhibit a slender and fragile growth habit. This means that their stems are soft and flexible, allowing them to easily coil around nearby structures for support.

3. **Mechanism of Twining**: The twining action occurs as the plant grows; it will naturally seek out a support structure (like a pole, fence, or another plant) and begin to spiral around it. This helps the plant to reach sunlight and grow upwards, which is crucial for photosynthesis.

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