Fungus is a small plant without chlorophyll, a green substance that helps plants make food.
Examples are molds, mushrooms, and yeasts.
In addition to interesting facts about oak trees, this page includes a description of the differences between the assumptions made in the population model applet and the real thing. At the end of the page you'll find references to other sites to learn more about trees and forests. These are broad-leaved trees that shed all their leaves during one season. Forests which are primarily composed of deciduous trees are called deciduous forests. The oak tree is a member of the Beech family and its scientific name is Quercus or Lithocarpus .