Martin Q. Blank said:
They lack blood.
Define blood. Are Horseshoe Crabs living? Their blood operates on a completely different principle than mammalian blood.
Earthworms have blood. Are they living? Or is it just some other worms he claims are not living?
We know plants have extensive and complex communication and nutrient networks in the soil. They react to stimuli and produce energy. They reproduce. It seems the only reason they aren't really alive according to this author is that the Bible doesn't directly say "living" when talking about plants in the English translation. Therefore, in true logically fallacious fashion, he has to prove they actually aren't living by creating a new definition of life.