Trees are all plants and carry out the life processes that all plants share. However, trees are not actually a scientific group of their own. Trees may be cone-bearing plants (gymnosperms), flowering plants (angiosperms) or ferns. All the groups of plants that include trees are vascular plants.
an electronic system of transmitting transient images of fixed or moving objects together with sound over a wire or through space by apparatus that converts light and sound into electrical waves and reconverts them into visible light rays and audible sound