green tendrils

"...some plants are actually much more sensitive to touch than human beings! For example, human skin can minimally detect a thread weighing 0.002mg being drawn across it. However, a feeding tentacle of the insectivorous sundew plant responds to a thread of 0.0008mg, and a climbing tendril of Sicyos actually repsonds to a thread weighing just 0.00025mg! Therefore, some plants have a sense of touch which is nearly 10 times as sensitive as human skin!" more at:


http://biology.kenyon.edu/edwards/project/steffan/b45sv.htm

Guelph.