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How do vines 'know' how to wrap themselves around a host stalk or post?
Asked by CyanoticWasp (20271)
December 4th, 2010
This afternoon I was idly pulling some vines that had wrapped themselves around a few of the hedges outside my house. It occurs to me that I’ve never understood how vines manage to ‘wrap’ themselves the way they do. It’s one thing to grow through underbrush and sort of ‘intermingle’ to get support that way, but how do vines manage to make a continuous ‘wrap’ around a post or other single stem? And do they always ‘wrap’ in the same direction? Do vines in the Southern Hemisphere wrap in the opposite direction?
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