Biodiversity of animals

• Six phylum >porifera,cnidaria,annelida,arthropods,platyhelminthes,chordata
• Cnidaria is the only phylum with radial symmetry
• The other 5 phylum are bilateral symmetry
• Cnidaria has two layers which include ectodem and endodem
• Cnidaria is a biploblastic it has two layers
• Cnidarian have no coelom
• Cnidarians have a nerve net instead of a brain
• Cnidarians have tentacles that contain stinging cells called nematocysts
• Chordata,annolida,arthropods,plateyhemithes,porifera, are triploblastic
• Coelomate>with body cavity
• Acoalomate>no body cavity
• Cnidaria and platyhelminths have a blind gut
• Porifera, annoloda,arthropoda,chordata have a through gut!😉
• Porifera and chordata have acoelomate
• Porifera


  Phylum of animals with a simple body structure and pores that allow water to flow through
• Annelida


  Phylum of animals with a long, segmented body and a complete digestive system
• Arthropoda


  Phylum of animals with a hard exoskeleton and a complete digestive system
• Mouth


  Opening where food enters the digestive system
• Anus


  Opening where undigested waste is excreted from the body
• Through gut

  Complete digestive system with a mouth, esophagus, stomach, small intestine, large intestine, and anus
• Chordata


  Phylum of animals with a notochord, dorsal hollow nerve cord, and pharyngeal gill slits at some point in their development