What if plant life could...

What if plant life could or does feel real pain? Interesting concept isn't it, although it doesn't stop us from killing many of the other life forms on the planet I wonder if our ethics for killing life is based on the organisms ability to express it's pain. If trees could scream while we cut them down, would we cut less? If animals could beg for their life would we kill less? Chances are we would, and it is interesting because while we define killing another human being as murder, some would call killing animals a sport, or something they enjoy.Something I've discussed with friends and classmates is the possibility of plants having the ability to feel pain. I remember during my early days as a biology student, comparing and contrasting animal cells and plant cells and how similar they really are. It is as if we derive from one another. What if trees could feel? It raises a series of questions, like where would we be today if we found out about this a century ago? What if we found out today? Would we stop? I recall finding a video on youtube, unfortunately I can't recall the name, if I find it I will post it. There was a short film about a young man who created machine that could listen to what trees were saying. He would approach all the trees with scars and marks, and all he could hear were short bursts of shrieks and screams. It was actually kind of frightening, and it is what spawned the idea for this blog.