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 CaCO3 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?