Venus fly trap video (VIDEO)
Caption
The inner side of the Venus Flytrap trap has small sensory hairs. The bending of a hair, for example by an insect, may cause the trap to snap shut. The animals caught are then broken down by an enzyme in the trap, and the plant absorbs the nutrients. But for the trap to close, the sensory hairs need to be touched twice within about 30 seconds. This way, the plant can save energy by not snapping shut every time a hair is stimulated by things other than potential prey.
Credit
Thor Balkhed/Linköping University
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