The classification of plants traces the evolution of plant life. There are over 284, 000 species of plants. Green plants having chlorophyll like green algae are the most primitive. They are aquatic plants. Terrestrial plants include mosses and vascular plants such as ferns. Conifers were prevalent in the Jurassic Era but today flowering plants dominate and are the most highly evolved. They have colonized all environments.

Originally released by QA International, 2006. Streaming video file encoded with permission for digital streaming by Infobase on May 06, 2015.

Classification of Plants (2:00); .