differences between parazoa, metazoa and eumetazoa
metazoa includes organisms which are multicellular eukaryotes having holozoic mode of nutrition
it can be classified into 2 types
it can be classified into 2 types
- parazoa it includes cell aggrigate body type organisms like porifera
- eumetazoa it includes organisms having tissue, organ, and organ system level of organisation like cnidaria to chordatas