Why is not possible for atracheophytes to grow tall?

Atracheophytes, such as mosses and liverworts, lack vascular tissue, which is essential for the transport of water and nutrients throughout the plant. Without this system, they cannot efficiently distribute resources to support a tall structure, limiting their growth to low, ground-hugging forms. Additionally, their reliance on direct water absorption from the environment prevents them from developing the structural support needed for height. As a result, they typically occupy moist habitats and remain small in stature.