Answer: The correct answer for the blank is- Non vascular.
Non vascular plants do not possess vascular tissues ( such as xylem and phloem, which are present in vascular plants for the water and mineral transport). Moreover, wide variety of specialized tissues are absent in them.
They are unable to control the rate of loss of water from their tissues. Due to this reason, they are adapted to grow in moist environments so that can absorb water and nutrients by the process of osmosis and diffusion.
Example- Bryophytes ( such as mosses and liverworts), algae.
