Domain Eukarya Kingdom Animalia Eukaryotic Multicellular Nucleus with no cell wall Motile at some point Consumer

Important vocabulary Symmetry – how organism is divided  Radial – same in all directions  Bilateral – two sides similar Coelom – body cavity  Acoelomate – no coelom  Pseudocoelomate – lined on one side with tissue  Eucoelomate – lined on both sides with tissue Cephalization - Sense organs are in one area Blastopore – early developmental stage Tissue layers - # of tissues (and what it becomes)  Endoderm -inner  Ectoderm- outer  Mesoderm -middle Gut – digestive organs  Gastrovascular cavity  complete (mouth to anus) Segmentation – is body in repeated sections Cleavage  Spiral - Protostome  Radial - Deuterostome

Symmetry Ceolom

Tissue Layers

Gut

Cleavage

Blastopore

Segmentation Cephalization

Phylum to Know Porifera – sponges Cnidaria – sea anemones, corals, jellyfish Platyhelminthes- flatworms Nematoda – roundworms Annelida – segmented worms (earthworms) Mollusca – snails, shellfish, slugs Arthropoda – insects, crustaceans, spiders Echinodermata – sea urchins, sea cucumbers Chordata - fish, amphibians, birds, us Others mentioned – Ctenophores, Rotifers, Hemichordata

Phylum Porifera - Sponges Multicellular Asymmetrical – no symmetry No body tissues Skeleton of CaCO 3 or silica Filter feeder Hermaphroditic Can reproduce asexually by splitting or budding

Phylum Cnidaria – Corals, jellyfish Radial symmetry 2 tissue layers (endo, ectoderm, mesoglea) Gastrointestinal sac Hermaphroditic Can reproduce asexually by budding or splitting (coral) Stinging cells (Nematocyst)

Phylum Platyhelminthes - flatworms Bilateral symmetry 3 tissue layers Acoelomate Gastrointestinal sac Some cephalization Can reproduce asexually by fission (splitting)

Phylum Nematoda - roundworms Bilateral symmetry 3 tissue layers Psuedocoelomates True gut – mouth to anus Most separate sexes

Phylum Annelida – segmented worms Bilateral symmetry 3 tissue layers Euceolomate Complete gut – mouth to anus Cephalization Segmented Spiral cleavage – Protostome Blastopore forms mouth

Phylum Mollusca – Clams, snails, squid Bilateral symmetry 3 tissue layers Euceolomate Complete gut – mouth to anus Cephalization Segmented Spiral cleavage – Protostome Blastopore forms mouth Shelled- 1 or 2 (some lost or internal)

Phylum Arthropoda – Insects, spiders, crabs Bilateral symmetry 3 tissue layers Euceolomate Complete gut – mouth to anus Cephalization Segmented Spiral cleavage – Protostome Blastopore forms mouth Exoskeleton of chitin

Phylum Echinodermata - sea star, sea urchin Bilateral symmetry 3 tissue layers Euceolomate Complete gut – mouth to anus Cephalization Segmented Radial cleavage – Dueterostome Blastopore forms anus Pentamerous symmetry as adult Asexual and sexual reproduction

Phylum Chordata – lancelets, sea squirts, us Bilateral symmetry 3 tissue layers Euceolomate Complete gut – mouth to anus Cephalization Segmented Radial cleavage – Dueterostome Blastopore forms anus Notochord – spine, skull Dorsal hollow nerve chord – spinal cord, brain Pharyngeal gill slits - pharynx Post-anal tail - coccyx

Chordate sub phylum Urochordata Sea squirt or tunicate Sessile as adult Cephalochordata Lancelet Vertebrata Includes 6/7 classes Agnatha Chondrichtyes Osteicthyes Amphibia Reptilia Aves Mammalia

Class Agnatha – jawless fish Skull Lack jaws  Hagfish  Lampreys

Class Chondricthyes – cartilaginous fish Cartilaginous skeleton Jaw  sharks  skates  rays

Class Osteicthyes – bony fish Skeleton of bone  Tuna  Salmon  All other familiar fish

Class Amphibia – Salamanders, toads, frogs, caecilians Four walking legs Water as young, land as adult Needs water for eggs Moist skin

Class Reptilia – Snakes, lizards, turtles, tortoise, crocidilians, tuataras Scaly skin Lungs Claws AMNIOTIC EGG

Amniotic egg

Class Aves - birds Feathers Endotherm – steady internal body temp. Wings Toothless beak

Class Mammalia – horses, us Fur Mammary glands – milk 4 chambered heart Endotherm  Monotreme – egg laying  Marsupial – pouched  Placental – live birth with placenta

Which is yours?