Of what use do you think are the spring − like parts of butterfly pea (gokarna), the passion flower (krishnakamal and the grapevine, to the plant?)
The spring−like part emerging from the butterfly pea, the passion flower and the grapevine is called ‘tendril’. Tendrils are thread−like structures that develop from the stem and intertwine around whatever they touch. In this way they help the plants to climb when they have weak stems.