what tree do acorns come from

Acorns come from oak trees, which are part of the genus Quercus and the family Fagaceae. There are about 500 species of oak trees worldwide, with 90 of them native to the United States. Oak trees are known for their large, sturdy branches and leaves that turn color in the fall. Acorns are the fruit or nut of an oak tree and typically contain a single seed, although some species may have two seeds. They are enclosed in a tough, leathery shell and borne in a cup-shaped cupule. Acorns are an essential food source for many animals, including squirrels, deer, and birds.