Answer:
The answer is Bryophytes (moss).
Explanation:
Bryophytes are ancient and non-vascular plants, that grow mostly in humid places, like the base of a tree. They don't present vascular tissue like the one present in vascular plants, but they do have one conduct that flow water and other components with capillarity principles. The lack of a developed vascular tissue has a lot to do with the size of these organisms.