special characteristics

PORIFERA

- spicules

- choanocytes

special characteristics

cnidaria

medusas

polyps

nematocysts

special characteristics

platyhelminthes

eye spots

flame cells

special characteristics

nematoda

cuticle

stylet

cyst

special characteristics

mollusca

radula

special characteristics

annelida

setae

septum

special characteristics

echinodermata

tube feet

madreporite

symmetry

porifera

none

symmetry

cnidaria

radial

symmetry

platyhelminthes

bilateral

symmetry

nematoda

bilateral

symmetry

mollusca

bilateral

symmetry

annelida

bilateral

symmetry

echinodermata

bilateral (larva)

penta radial as adult

body cavity

porifera

none

body cavity

cnidaria

acoelomate

body cavity

platyhelminthes

acoelomate

body cavity

nematoda

pseudocoelomate

body cavity

mollusca

coelomate

body cavity

annelida

coelomate

body cavity

echinodermata

coelomate

which is the only animal phylum that has segmentation

annelida

Protostome or Deuterostome
radial or spiral cleavage
determinate or indeterminate

Porifera

undetermined

both

both

Protostome or Deuterostome
radial or spiral cleavage
determinate or indeterminate

cnidaria

neither

both

both

Protostome or Deuterostome
radial or spiral cleavage
determinate or indeterminate

platyhelminthes

protostome

spiral

determinate

Protostome or Deuterostome
radial or spiral cleavage
determinate or indeterminate

nematoda

protostome

spiral

determinate

Protostome or Deuterostome
radial or spiral cleavage
determinate or indeterminate

mollusca

protostome

spiral

determinate

Protostome or Deuterostome
radial or spiral cleavage
determinate or indeterminate

annelida

protostome

spiral

determinate

Protostome or Deuterostome
radial or spiral cleavage
determinate or indeterminate

echinodermata

deuterostome

radial

indeterminate