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