Are plants intelligent? What if they also have sensations and memory, can think and communicate? Some of them sleep and dance. Scientific facts unfold fresh ideas about the world of vegetation. Do plants resemble us? Do we underestimate them? Scientists are asking these very questions, do they perceive their environment? Do they have a memory? Could they have a nervous system? To these men and women, the great divide between the plant and animal world is not that great at all.