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Phylum (Porifera (SPONGES (Class (Calcarea ("Chalky" sponges),…
Phylum
Porifera
SPONGES
Class
Calcarea
"Chalky" sponges
Hexactinellida
"Glass" sponges
Demonspongia
"Bath" sponge
EX. of organisms within group
#
No symmetry
Metazoan (no organized tissues)
No coelom
Aquatic
Type of support structure/skeleton
spicules
Life stages & reproductive features
A-sexual & sexual
unsegmented
No respiratory system
Digestive system
Filter feeder
No open or closed circulatory systems
No jointed appendages
No cephalization
No deuterostome or protostome
Other special structures or characteristics
No true tissues
Major evolutionary developments
Multi-cellular