Science

Many plants' ability to grow toward light can be viewed as a sort of intelligence that can distinguish between light and dark and perhaps even detect edges including silhouettes. And this intelligence is distributed throughout much of the plant's body; and many plants can be grown from cuttings, with the new plant exhibiting the same intelligence as the "mother," growing toward the light. (And I think octopi can re-grow an amputated arm, although as far as I know the amuptated arm can't re-grow the rest of an ooctopus.) And we know that plants actually detect many other things, such as gravity, desirable nutrients, and in some cases, harmful predators that the plant needs to mobilize against, etc.; and many if not all those functions seem to exist in many parts of the plant, instead of being concentrated in particular sense organs and a brain.