THE STUDY OF LIVING THINGS SIMPLE ORGANISMS Protozoa Microscopic one-celled creatures Fungi Mushrooms, toadstools & moulds Algae simple plant-like organisms seaweed ANIMALS PLANTS Animals WITHOUT backbones Animals WITH backbones Plants WITHOUT flowers Mosses & ferns Plants WITH flowers Have flowers which produce seeds Conifers Trees with needle-shaped leaves & cones INVERTEBRATES VERTEBRATES         The information on this site is subject to a disclaimer and a copyright notice