I'm sorry, but this is pure psuedo-science and quite poor philosophy. There is absolutely zero evidence that plants can feel pain or suffer. Yes, plants can respond to their environments, true, but that is not equivocal to having "perception" in the sense of an organism who can think and have desires. But even while there is no evidence that plants can feel pain, lets assume hypothetically that they can. Even if they can feel pain, would that pain be equivocal to us or an animal feeling pain? Of course not, as there is no higher awareness of oneself being in pain. The plant cannot think about the fact that it is thinking of the pain that it is in. But lets ignore this, and assume (against all science) that plants can indeed feel pain, and that their pain is the same as our pain. Would we then be justified in your view of "kill whatever we want" as long as we are "respectful"? Clearly not. For if plants can indeed feel pain, and it is indeed comparable to our pain, then it would still make sense to be a vegetarian. For a meat eating society requires far more plants to die than a vegetarian society (and obviously far more animals to die). For the meat eating society, you have to factor in all the plants we eat, plus all the plants and crops that the animals were fed before they were killed (if you know anything about how energy is transferred, you would know we get far less in return from an animal than what we put in it). So if you are really concerned with plant suffering, it is more logical to support a vegetarian diet. But of course I don't think you really are in fact concerned with plant life, you are just trying to construct (a very poor) argument against vegetarianism. So lets be serious, and not give ridiculous arguments. Meat eaters who say what you are saying here are simply either misinformed or being intellectually disingenuous. The same would be true of vegans who claim that if you eat any meat or animal product, you will be unhealthy and get cancer. Both of these extreme views are simply naive, and have no place in serious discussion. Do you really think that a plant releasing toxins is serious evidence for higher awareness and the ability to suffer? If you don't see the huge unjustified leap in logic you are making here, I don't know what to say...