what four characteristics set insects apart from other arthropods?”
Animals are a major group of mostly multicellular, eukaryotic organisms of the kingdom Animalia or Metazoa. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their life. Most animals are motile, meaning they can move spontaneously and independently. All animals are also heterotrophs, meaning they must ingest other organisms for sustenance. Most known animal phyla appeared in the fossil record as marine species during the Cambrian explosion, about 542 million years ago. Contents [hide] * 1 Etymology * 2 Characteristics o 2.1 Structure o 2.2 Reproduction and development o 2.3 Food and energy sourcing * 3 Origin and fossil record * 4 Groups of animals o 4.1 Porifera, Radiata and basal Bilateria o 4.2 Deuterostomes o 4.3 Ecdysozoa o 4.4 Platyzoa o 4.5 Lophotrochozoa * 5 Model organisms * 6 History of classification * 7 See also * 8 References o 8.1 Notes o 8.2 Bibliography * 9 External links Etymology The word “animal” co
Journal Biodiversity and Conservation Publisher Springer Netherlands ISSN 0960-3115 (Print) 1572-9710 (Online) Issue Volume 8, Number 8 / August, 1999 DOI 10.1023/A:1008880618304 Pages 1089-1100 Subject Collection Biomedical and Life Sciences SpringerLink Date Thursday, October 28, 2004 Add to marked items Add to shopping cart Add to saved items Permissions & Reprints Recommend this article PDF (5.5 KB)Free PreviewFree Preview Plant characteristics determine insect borer assemblages on Protea species in the Cape Fynbos, and importance for conservation management Mark G. Wright1, 2 Contact Information and Michael J. Samways3 (1) Agricultural Research Council, Roodeplaat, VOP I, South Africa (2) Present address: Department of Entomology, Cornell University, Insectary Building, Ithaca, NY 14853, USA (3) Invertebrate Conservation Research Centre, School of Biological Sciences, University of Natal, Private Bag X01, Scottsville, 3209, South Africa Abstract The influence of regional climate,
