The Fungi Kingdom is made up of a variety of different fungi. For many years, it was believed that fungi were plants. Today we know that fungi are different from plants in some very important ways.
First, unlike plants, fungi cannot make their own food. They must rely on other food sources to support them. There are also differences in the basic makeup and chemistry of their cells.
One common type of fungus is the mushrooms you find on your pizza. Other fungi include microscopic fungus, truffles, and more.