Seedless Plants

The Seedless Vascular Plants consist of four main Divisions; Pterophyta (ferns), Psilophyta, Lycophyta, and Sphenophyta.  These plants all share the common evolutionary trait of vascular tissue; specialized transport tissue found in most "modern" plants.  This means the plant can now transport water and soil nutrition more efficiently allowing for greater complexity in plant structure including height and the ability to support a more complex structure of photosynthesis, leaves. Xylem and phloem, the two major types of vascular tissue, each transport water and nutrition, respectively, to the upper regions of the plant from the root system.  The Vascular Seedless plants are the most evolutionarily advanced plants aside from the seeded plants.