Vetches and passion flowers have modified some of their leaves and converted them into tendrils. These grope around in space until they touch the stem of another plant and swiftly coil around it. The tendrils then coil and pull the plant up towards the sunlight.
Awwwh shit those are like the scary plants that moved in those movies when we were little kids..
(Source: utoq, via erly-bright)
