To claim that plants feel pain will require defining what you mean by pain in such a way that it is not dependent on the biological process of receiving and processing signals from pain nerves .-- & trade; 18 : 36, 14 February 2011 ( UTC)
12.
In the rats, hypersensitivity apparently occurred because their nervous systems were still developing and reacted to the foot irritation by sprouting extra pain nerves in the spinal cord, according to a report by Dr . Maryann Ruda and other researchers from the National Institute of Dental and Craniofacial Researchin Bethesda, Md.