, Animal Diversity
Characteristics
> eukaryotic
> multi-cellular
> no cell wall around cells
> have no chlorophyll: heterotrophic
Classification Porifera
Asymmetrical, simple structures
eg sponge
Cnidaria
Radial symmetry, soft body, hydro skeleton
eg sea anemone, jellyfish
Platyhelminthes
Flatworms, mainly parasitic
Nematoda
Roundworms, mainly parasitic
Annelida
Animal kingdom Segmented worms
Earthworms, leeches
Echinodermata
Radial symmetry, hard covering
Star fish, sea worms
Mollusca
Soft body, some have hard outer covering/shell
Snails, muscles, oysters
Arthropoda
Hard exoskeleton, appendages, some sense
organs
Butterfly, crab, spider
Chordata
Appendages, sense organs, internal skeleton
Vertebrae