Phyla of Kingdom Animalia n n Porifera Cnidaria

Phyla of Kingdom Animalia n n Porifera Cnidaria Ctenophora Entoprocta n n n Mollusca Annelida Arthropoda Echinodermata Chordata

Phylum: Porifera Sponges: around 5, 000 living species n Simplest multi-cellular organisms n Cellular-level organization n – Their cells are specialized – Similar cells are not organized into tissues All sessile and benthic n Filter feeders n

Phylum: Cnidaria Radially or Biradially symmetric n Tissue level of organization n True organs do not occur n Two basic body forms: n – Medusa: free swimming or floating – Polyp: usually sessile n Nematocysts

Phylum: Cnidaria Corals n Hydroids n Sea anemones n Jellyfish n Sea pens n

Phylum: Echinodermata Calcereous endoskeleton n Pentaradial symmetry n Water vascular system (tube feet) n – Decentralized nervous system

Phylum: Echinodermata Sea stars n Brittle stars n Sea urchins n Sand dollars n Sea cucumbers n

Phylum: Arthropoda Bilaterally symetrical n Strongly segmented bodies n Exoskeletal construction n Molting required for growth n More species of Arthropod than all other species combined n

Phylum: Arthropoda Barnacles n Shrimp n Crabs n Lobster n Isopods n Amphipods n Copepods n

Phylum: Mollusca Bilaterally symmetrical n Strongly cephalized n Complicated digestive system n Complicated nervous system n Most have a shell n Over 50, 000 living species n

Phylum: Mollusca n n n Abalone Nudibranchs Octopi Squid Scallops Sea hare n n n n Mussels Oysters Clams Periwinkles Chitons Snails Limpets

Phylum: Chordata (vertebrates) n Organisms that possess a Notochord – a rod that serves to stiffen the body and act as a support during locomotion Bilateral symmetry n Segmented body n Ventral heart and closed blood system n Bony or cartilaginous endoskeleton n

Phylum: Chordata (vertebrates) n n n Tunicates Salps Sharks Rays Skates Bony fish n n n Sea lions Seals Whales Sea otters Dolphins Birds