A Tree of Life is used to demonstrate the various forms of life on our planet and describe the relationships among the different organisms.  These specimens can be living or extinct.  A tree of life is used to show at what point in history two specimens split apart from their last universal common ancestor.  A tree of life can show the classification of plants or animals and will usually include both classifications on one tree of life.

Check out the video below to learn more about the plant and animal tree of life!