Tendrils are slender, thread-like structures that many climbing plants use to support themselves as they grow. These specialized stems or leaves can wrap around nearby objects, helping the plant to reach sunlight and avoid competition for resources. Common examples of plants with tendrils include peas, grapes, and cucumbers. Tendrils can be sensitive to touch, allowing them to quickly coil around supports when they come into contact with them. This adaptation is crucial for climbing plants, as it enables them to ascend and thrive in their environments, often leading to increased growth and reproductive success.