Porifera
"sponges" |
basal animals |
no true tissue |
sedentary |
marine or freshwater |
suspension feeder |
Bilaterians
Lophotrochozoa |
bilateral sym |
Ecdysozoa |
triploblastic |
Deuterostomia |
true coelom |
| |
2 openings |
Mollusca
gastropods, bivalves, cephalopods |
marine |
coelomate |
open circ system |
soft bodied with hard shell |
intelligence in cephalopods |
Annelida
Polychaetes |
bristle worms |
Oligochaetes |
earthworm leeches |
fused rings |
coelomates |
closed circ system |
Echinoderms
sea stars/urchins/ cucumbers, sand $, brittle stars |
slow moving/sessile |
endoskeleton of ossicles |
external sex repro |
|
|
Ctenophora
comb jellies |
basal eumetazoans |
Lophotrochozoa
-protostomy |
Platyhelminthes |
flatworms |
Syndermata |
rotifers |
Mollusca |
molluscs |
Annelida |
annelids |
Plathelminthes
flatworms |
bilateral sym |
acoelomate |
aquatic |
single opening |
parasitic: tapeworm |
Arthopoda
segmented body plan |
cuticle |
open circ system |
specialized jointed appendages |
- walking, feeding, sensory, reprod, defense |
Arthopoda subphyla
Chelicerate |
horseshoe crab, scorpians, ticks, mites, spiders |
Myriapod |
centipedes, millipedes |
Crustacean |
crab, lobster, shrimp, barnacles |
Hexapod |
insects and relatives |
Chordates
Notochord |
dorsal hollow nerve cord |
pharyngeal slits |
post anal tail |
|
|
Cnidaria
jellyfish, anemones, corals, hydras |
radial symmetry |
diploblastic |
sessile/motile |
sac w/ central digestive compartment |
single opening |
Syndermata
rotifers |
aquatic |
pseudocoelomate |
two opening |
parthenogenesis |
Ecdysozoans
most species rich animal group |
protosomy |
ecdysis |
shedding of cuticle |
cuticle |
tough exoskeleton 4 support and protection |
Nemotoda
roundworms |
parasitic |
live in body fluids |
reproduce sexually |
internal fertilization |
Deuterostomia
Echinoderms and chordates |
shared developmental characteristics (deuterostomy) |
radial indeterminate cleavage |
anus from blastopore |
|
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