> But he is also the person who proved what is universally taken as granted: Plants are alive.
I'm afraid I have no idea what you're talking about. Farmers have known that plants are alive for a very long time. Nowhere on the Wikipedia page is anything close to this being suggested.
The work he did that is described on the Wikipedia page says that he found that plants have an electrical nervous system, but I don't think that's what makes modern people think that plants are alive, so I wouldn't exactly call this something that's taken for granted.
If there is some brief controversy in the 19th century where they decided that plants couldn't be alive due to a lack of an electrical nervous system (The discovery that animals had electrical nervous systems happened in the 19th century), I have not heard of it, but perhaps this is what you are referring to? It sounds interesting if that's the case. Can you expand?