Animals can show some degree of intelligence because they have brains feeded by biological sensors. Brains are made of nerve cells.
Fungi, plants or rocks don't have nerve cells, never had nerve cells and never will have nerve cells, so they can not have a brain. Not. They don't have it. I don't care about if bulbasaur is half plant and your favorite. This things are not real...
Now fill the gaps: A creature without a nervous system can't have ...
Pseudoscientific attention grabbers are becoming a plague