Worlds of David Darling
Encyclopedia of Science
   
Home > Encyclopedia of Science

invertebrate




An animal other than those in the phylum Chordata; that is, an animal that does not exhibit the characteristics of vertebrates, namely possession of a notochord or vertebral column, ventral heart, etc. Invertebrates are a miscellaneous collection of groups from single-celled organisms, such as bacteria, to complex multicellular animals such as insects and cephalopods.


Related category

   • ZOOLOGY