Touch is the most basic sense: Even bacteria use it to navigate their environment and communicate

(Natural News) Bacteria may be some of the simplest forms of organisms, but they have been known to be capable of responding to chemical signals and perceiving their environment even without sensory organs. However, a new research has revealed that bacteria actually possess a “sense of touch” and are able to recognize surfaces and change their behavior...

from NaturalNews.com http://ift.tt/2zBBE6i