Most plants are vascular plants and have vascular tissues. Vascular tissues are made of longer than usual cells that act as tubes. Larger plants need vascular tissues to get the nutrients and water everywhere. Smaller plants that are lower to the ground where nutrients just travel from one cell to another. There are two categories of plants, seed plants and non-seed plants.
Seed plants have a seed with food, surrounded by a protective coating, sometimes a fruit.
Non-seed plants are usually in wetter areas for sperm needs to swim to the egg. There are two stages in plants life which alternate. There is the gametophyte and sporophyte generations. This is called Alternation of Generation . The gametophyte stage develops the gametes, and the sporophyte stage produces the spores.