Chapter 4. Classification of Organisms

  1. Michael H. Gerardi and
  2. Mel C. Zimmerman

Published Online: 28 JAN 2005

DOI: 10.1002/0471710431.ch4

Wastewater Pathogens

Wastewater Pathogens

How to Cite

Gerardi, M. H. and Zimmerman, M. C. (2004) Classification of Organisms, in Wastewater Pathogens, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/0471710431.ch4

Author Information

  1. The Pennsylvania State University, USA

Publication History

  1. Published Online: 28 JAN 2005
  2. Published Print: 22 OCT 2004

Book Series:

  1. Wastewater Microbiology Series

Book Series Editors:

  1. Michael H. Gerardi

Series Editor Information

  1. The Pennsylvania State University, USA

ISBN Information

Print ISBN: 9780471206927

Online ISBN: 9780471710431



  • organisms;
  • classification;
  • kingdom;
  • family;
  • class;
  • order;
  • phylum


The large diversity of organisms is organized or classified into many categories according to the characteristics they share with other organisms. These characteristics are similarities in such factors as structure, genetics, biochemistry, and reproduction. The major categories that are used to classify organisms consists of the following: Kingdom, Phylum, Class, Order, Family, Genus, Species.