Poison oak can refer to one of two species of the genus Toxicodendron that are native to North America. Toxicodendron diversilobum, or Rhus diversiloba, which is the Western Poison oak, or Toxicodendron pubescens, or Rhus pubescens, which is the Atlantic Poison oak.

poison oak has five leaves....i think

"Poison oak is most common in the western United States, although it is also found in eastern states. It rarely is found in midwestern states." http://health.yahoo.com/ency/healthwise/hw74805

No. Poison Oak is a different species than oak trees. Poison Oak is a shrub with leaves that look similar to an oak trees.

No. Poison oak is not a tree, but a vine. Oak trees grow from acorns.