Yeast and mushrooms are types of fungus. Plants are organisms that can make their own food. They have lots of cells that are very specialized. There are many kinds of plants from simple to very complex. Some plants that you know are mosses, ferns, algae, flowering plants.
Animals are many-celled organisms that have specialized tissues and organs.
Animals must search for their own food. Their bodies will not manufacture it. There are many kinds of animals from very simple to very complex. They are divided into animals with a vertebral column or backbone and animals without one.