User blog comment:Mr.Robbo/Human Chauvinism 5/@comment-4364108-20140106235932/@comment-1743498-20140107010810

I would imagine that sapient plants would probably just be called plants since that's the closest thing that they resemble on Earth. In reality, I would imagine that they would be an entirely different life form altogether, neither animal nor plant.

For aquatic environments, it might be possible with some intervention or assistance from other terrestrial species, but beyond that, being amphibious seems to be far more plausible.