Quote from dragonz
can you remember where you read about that, sounds like an interesting study
Biologists at the University of Turin and the Max Planck Institute in Jena were yesterday reported to have found evidence that plants sensed — and reacted to — the presence of hungry, leaf-chomping grubs. Their response was to emit an odour similar to lavender. This alerted other plants to the presence of a predator.
Between 1960 and 1970, Burdon-Sanderson conducted many experiments on the Venus flytrap (Dionaea muscipula). The first experiment, and possibly the most remarkably revealing of all, was to attach electrodes to the surface of the trap lobes in the hope of recording electrical activity. He found that each time a trigger hair was touched it fired off a wave of electrical activity almost identical to the nerve impulses, or action potentials, produced by animal neurons. This experiment was carried out on the Sundew and Sensitive plant - with similar conclusions!
The experiments carried out by Cleve Backster in 1966 where he connected a plant to a polygraph and recorded responses when he thought about burning the leaves have been proven to be fatally flawed and Backster has been discredited by academics.