The Ecology and Organismal Biology option is for students interested in the biology of organisms (plants or animals) or the biology of populations and communities. Course offerings include those from organismal biology, ecology, evolutionary biology, and conservation biology.

This option is a graduate prep program, and it is designed for students interested in academia or employment with government agencies (e.g. National Biological Survey, U.S. FWS, etc.), or environmental consulting agencies. This option is also an excellent choice for pre-veterinary students.