Answer:True
Explanation: plants which lack vascular tissue is known as non-vascular plants. Vascular tissues consist of Phloem and Xylem.
Xylem vessels transport water and mineral through the plants while phloem vessels transport nutrients and products of photosynthesis via the plant.
Non vascular plants lacks features like Bark, so they do not grow very tall, they remain low on the ground. Examples include; mosses, liverworts etcetera.