Animalia
These are multicellular, heterotrophic eukaryotes lacking
cell walls
Classification of animal phyla
Body plan
(type of symmetry)
Number of
tissue layers
Presence of
a coelom
Aspects of
early development
Phylum Porifera
Phylum Cnidaria
Phylum Annelida
Phylum Arthropoda
Phylum Echinodermata