Plant is a word that covers an enormous number of living things in the world. Plants can be divided up into several groups, namely algae (that green slime you find in ponds), bryophytes (non vascular plants, or mosses and lichens - the small, often fuzzy plants that you see growing on rocks or on the ground in damp corners) and tracheophytes. Tracheophytes, or vascular plants, are the most familiar. They include all the trees, ferns, grass and flowers you see around your neighbourhood. The plant in the picture is a vascular plant, growing in a pot.