Parasitic plants as well.
I don't have great links but look at mistletoe https://en.m.wikipedia.org/wiki/Mistletoe and Indian pipe https://en.m.wikipedia.org/wiki/Monotropa_uniflora for example.
I don't have great links but look at mistletoe https://en.m.wikipedia.org/wiki/Mistletoe and Indian pipe https://en.m.wikipedia.org/wiki/Monotropa_uniflora for example.
Also, a parasitic plant (a green alga) that infects animals: https://en.wikipedia.org/wiki/Prototheca