Provide a comparative outline of the main characteristics of each phylum in the Animal Kingdom.

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(N/A) The following table provides a comparative summary of the key characteristics of various animal phyla:
Phylum Level of Organization Symmetry Coelom Segmentation Digestive System Circulatory System Respiratory System Distinctive Features
Porifera Cellular Various Absent Absent Absent Absent Absent Body with pores and canal system
Cnidaria Tissue Radial Absent Absent Incomplete Absent Absent Cnidoblasts present
Ctenophora Tissue Radial Absent Absent Incomplete Absent Absent Comb plates for locomotion
Platyhelminthes Organ/Organ-system Bilateral Absent Absent Incomplete Absent Absent Flat body,suckers
Aschelminthes Organ-system Bilateral Pseudocoelomate Absent Complete Absent Absent Often worm-shaped,elongated
Annelida Organ-system Bilateral Coelomate Present Complete Present Present Metameric segmentation
Arthropoda Organ-system Bilateral Coelomate Present Complete Present Present Exoskeleton of chitin,jointed appendages
Mollusca Organ-system Bilateral Coelomate Absent Complete Present Present External shell usually present
Echinodermata Organ-system Radial Coelomate Absent Complete Present Present Water vascular system
Hemichordata Organ-system Bilateral Coelomate Absent Complete Present Present Proboscis,collar,and trunk
Chordata Organ-system Bilateral Coelomate Present Complete Present Present Notochord,dorsal hollow nerve cord,gill slits

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