KingdomKingdomAnimaliaAnimalia

EukaryoticEukaryotic MulticellularMulticellular HeterotrophHeterotroph

icic No cell wallNo cell wall

Porifera

Annelida

Cnidaria

Mollusca

Flatworms

Echinodermata

Roundworm

Arthopoda

Sharks

Bony Fish

AmphibiansBirds

Reptile

Mammal

SymmetrySymmetry

Invertebrate Phyla: Invertebrate Phyla: PoriferaPorifera

Pore-bearingPore-bearing Free swimming larva Free swimming larva

form sessile adultsform sessile adults Aquatic, mostly Aquatic, mostly

marinemarine

Sexual and Asexual Sexual and Asexual ReproductionReproduction

Filter feeders Filter feeders Commonly known as Commonly known as

spongessponges

Invertebrate Phyla: Invertebrate Phyla: CnidariaCnidaria Have tentacles with Have tentacles with

“stinging” cells called “stinging” cells called nematocystsnematocysts

Radial symmetryRadial symmetry One body openingOne body opening Two body formsTwo body forms

Polyp is sessilePolyp is sessile Medusa is free swimmingMedusa is free swimming

Hydra Coral Jellyfish

Invertebrate Phyla: Invertebrate Phyla: PlatyhelminthesPlatyhelminthes

FlatwormsFlatworms Bilateral symmetryBilateral symmetry Free living or parasiticFree living or parasitic Sexual reproduction (hermaphroditic) and Sexual reproduction (hermaphroditic) and

asexually by regenerationasexually by regeneration

Planaria Tapeworm

Invertebrate Phyla: Invertebrate Phyla: NematodaNematoda

Roundworms – no segmentsRoundworms – no segments Two body openingsTwo body openings Free-living and parasiticFree-living and parasitic Sexual reproductionSexual reproduction Body cavity present but only partially lined with mesodermBody cavity present but only partially lined with mesoderm

Heartworm Ascaris

Invertebrate Phyla: Invertebrate Phyla: AnnelidaAnnelida

Segmented bodiesSegmented bodies Closed circulatory systemClosed circulatory system Hermaphroditic, sexual Hermaphroditic, sexual

reproductionreproduction A “true” coelom allowed A “true” coelom allowed

complex organ systems to complex organ systems to developdevelop

EarthwormsLeeches

Invertebrate Phyla: Invertebrate Phyla: MolluscaMollusca

Soft bodied, many with a Soft bodied, many with a hard outer shell (may be hard outer shell (may be absent)absent)

Some filter feeders, some Some filter feeders, some a predatorsa predators

Snails

Oysters, scallops, clams

Squid, octopus

Invertebrate Phyla: Invertebrate Phyla: EchinodermataEchinodermata

““Spiny skin”Spiny skin” Contains an endoskeletonContains an endoskeleton Water vascular systemWater vascular system Radial symmetryRadial symmetry Regeneration of body partsRegeneration of body parts

Starfish

Sand Dollar

Sea Cucumb

er

A closer look at starfish…A closer look at starfish…

Tube FootSucker

Radial CanalMadreporite Plate

Reproductive Glands

Ring Canal

Digestive Gland

Stomach

Anus

Endoskeleton

Eyespot

Invertebrate Phyla: Invertebrate Phyla: ArthropodArthropod

Very large, diverse Very large, diverse group of animalsgroup of animals

Adapted to many Adapted to many different different environmentsenvironments

Jointed Jointed appendagesappendages

Exoskeleton made Exoskeleton made of chitinof chitin

Insects(73%)

Non-insectarthropods(12%)

Non-arthropod invertebrates

(11%)

Vertebrates (4%)

Classes of Arthropoda Classes of Arthropoda CrustaceansCrustaceans

Two body segmentsTwo body segments 5 pairs of legs5 pairs of legs Lobster, shrimp, Lobster, shrimp,

crabcrab

ArachnidaArachnida Two body segmentsTwo body segments 4 pairs of legs 4 pairs of legs Spiders, ticks, Spiders, ticks,

scorpionsscorpions

Classes of Arthropoda Classes of Arthropoda ChilopodaChilopoda

CarnivoresCarnivores One pair of legs One pair of legs

per body segmentper body segment CentipedesCentipedes

DiplipodaDiplipoda HerbivoresHerbivores Two pairs of Two pairs of

legs per body legs per body segmentsegment

MillipedesMillipedes

Classes of ArthropodaClasses of Arthropoda

InsectaInsecta Three body segmentsThree body segments Many have wingsMany have wings Some have complex Some have complex

social structuressocial structures

Phylogenetic Phylogenetic TreeTree