How do lookalike plants ‘know’ what to look like to avoid being eaten?

Question

There are nettles, and there are false nettles that look very similar to nettles when not in flower. Given that the plants can’t see each other to imitate, how did the false (non-harmful) plant develop to be so visually similar to the harmful one?

In: Biology

Answer 1

They don’t “know” it is just that the ones that look most like nettles or whatever else don’t get eaten so they survive to breed and more of those plants have baby plants that look like them and whatever they resemble. https://youtu.be/9rOURRXEbk0