Download Domain Eukarya

Domain Eukarya
Kingdom Animalia
Coelom?
Body cavity - space between
digestive tract wall and body wall,
surrounded by mesoderm cells,
location of organs
Phyla: Mollusca, Annelida,
Arthropoda, Echinodermata,
Chordata
Pseudocoelom?
Space around digestive cavity, not
surrounded by mesoderm cells
Phylum Nematoda
gut
gut
gut
Symmetry
Balance or arrangement of parts
asymmetry- no symmetry
Porifera
radial- wheel plan
Porifera, Cnidaria, Echinoderm
adults
bilateral- 2 sided
Echinoderm larva, Platyhelminthes,
Arthropods, Annelids, Chordata
Protostome?
Coelom develops from a solid mass
of cells, blastopore becomes
mouth
Mollusca, Annelida, Arthropoda
Mouth
Deuterostome?
Coelom forms from outgrowth of
digestive tube, blastopore
becomes anus
Echinodermata, Chordata
Anus
Domain Eukarya
Kingdom Animalia
Traits
 Eukaryote
 Multicellular
 Heterotroph
 No cell wall
 Diploid except for gametes
 Most internal digestion
 Most zygotes with developmental
stages
Animals probably evolved from
colonial protists
Phylum Porifera
Traits
 Radial or asymmetry
 3 layers of cells, no tissues or
organs
 No developmental stages or
layers
 Cellular digestion
 Water dwelling
Examples: sponge
Phylum Cnidaria
Traits:
 Radial symmetry
 Tissues (muscle, nerve) no organs
 2 developmental layers (endo &
ectoderm)
 No coelom
 One opening
 Tentacles with stinging cells
 Water dwelling
Phylum Cnidaria

Examples: coral, hydra, sea
anemone, jellyfish
Phylum
Platyhelminthes
Traits:
Bilateral symmetry
 Simple organs and systems
 3 developmental layers (endo,
ecto, mesoderm)
 No coelom
 One opening
Examples: planaria, flukes,
tapeworms

tapeworm
fluke
Phylum Nematoda
Traits:
 Bilateral
 Organs and systems (no circulatory)
 3 developmental layers
 Pseudocoelom
 2 openings
Examples: nematodes of soil & water,
trichina parasites
Phylum Mollusca
Traits:
 Bilateral, 3 layers, 2 openings,
coelom
 Organs and systems (open
circulatory)
 Coelom (protostome)
Examples: snail, slug, oyster,
octopus, clam
Phylum Annelida
Traits:
 Bilateral, 3 layers, 2 openings,
coelom
 Systems (closed circ)
 Segments
 Coelom (protostome)
Examples: earthworms, sandworms,
leeches
Phylum Arthropoda
Traits:
 Bilateral, 3 layers, 2 openings
 Coelom (protostome)
 Exoskeleton of chitin
 Jointed appendages
Examples: spider, insect, lobster,
scorpion, tick
Phylum Arthropoda
5 classes:
 Horseshoe crabs
 Arachnids (spiders)
 Crustaceans (lobsters, crabs)
 Millipedes and centipedes
 Insects (grasshoppers, bees,
butterflies, ants, mosquitoes)
Phylum Echinodermata
Traits:
 Bilateral larvae, radial adults
 3 layers, 2 openings
 Coelom (deuterostome)
 Endoskeleton
 Water vascular system, marine
Examples: starfish, sea urchin, sea
cucumber
Phylum Chordata
Traits:
 Bilateral, 3 layers, 2 openings
 Coelom (deuterostome)
 Dorsal, hollow nerve cord
 Notochord (cartilage rod in back)
 Gill structures
 Post-anal tail
Invertebrate examples: tunicates,
lancelets
tunicate
Lancelet
Classes Vertebrate chordates
Agnatha- Jawless fish- lamprey
Classes Vertebrate chordates
Chondrichthyes- cartilage fish, gill
slits, no scales- sharks, rays
Ray
Classes Vertebrate chordates
Osteichthyes- bony fish, scales,
operculum- tuna, trout, koi
Classes Vertebrate chordates
Amphibian- no hard shell on eggs,
moist skin, reproduce in waterfrogs, toads, salamanders
Classes Vertebrate chordates
Reptilia- shelled (amniotic) egg, cold
blooded (ectothermic), scaleslizards, snakes, alligators, turtles
Classes Vertebrate chordates
Aves- shelled amniotic egg, warm
blooded (endothermic), scales &
feathers
birds of all kinds
Classes Vertebrate chordates
Mammalia- hair, warm blooded,
amniotic egg that developes inside
mother, mammary glands –
bat, dolphin, kangaroo, human