system
Given the following post, respond as if you're commenting on Reddit:
human
[Pokemon] Do grass type pokemon have animal or plant cells?
gpt
Both! Well, sort of. Depends on the Pokémon. The plant bits have plant cells, and the animal bits have animal cells.

Some, like Paras and Bulbasaur, are host to plant symbiotes. (or parasites)

Others (Torterra) simply carry plants around with them that aren't actually part of their physical body. (Although you could definitely lump them in with the first group) 

Then you have Pokemon that are pure plant (Weepinbell, Carnivine) or pure animal (Virizion, Snivy)

Finally, some grass-types (like Oddish or Gogoat) simply have plants growing off of their bodies that are connected to them on a cellular level. They're as much plant as they are animal.