Download Phylum

Characteristics of The Animal Kingdom Page 1
Phylum
Porifera (p. 618-621)
Cnidaria (p. 622-628)
Platyhelminthes
Nematoda
(flatworms p.629- 632) (roundworms p.633- 635)
Asymmetrical
Radial Symmetry
Bilateral symmetry
Bilateral symmetry
Organizational Cells
Level (Cells,
tissue, organs
etc)
Tissues
Organs
Organs
Body Cavity/
Coelom
No Coelom (acoelomates)
No Coelom (acoelomates)
Acoelomates
Pseudocoelom
Segmentation
Not segmented
Not segmented
Not segmented
Not Segmented
Digestive
(incomplete/
complete/
structures)
Cellular
Incomplete- only one opening
that takes in food and releases
waste
Incomplete
Complete-one way movement
of food waste (two
openings, mouth and an anus)
Respiratory
structures
(how does it
breathe?)
Ostia
From the outer layer of its
body
None (outer layer of its body)
Movement of fluid around the
pseudocoelom serves as a
simple gas exchange system
Circulatory
(open/closed/
structures)
Cells
None
None
Movement of fluid around the
pseudocoelom serves as a
simple circulatory system
Skeletal System
Support system
Spicules/spongin
Hydrostatic
Hydrostatic
Hydrostatic
Reproduction
Asexual reproduction- budding Asexual reproduction- budding
Sexual reproductionSexual- some hermaphrodites
hermaphrodites (both
External fertilization
male/female sexual structures)
Asexual reproduction- budding Sexual – eggs/ larvae cause
Sexual- hermaphrodites; need
many problems for other
another individual to
animals they infect
simultaneously transfer sperm
Examples
Sponges
Planaria Tape Worms
Liver Flukes Blood Flukes
Characteristics
Symmetry
Jellyfish, Sea Anemone,
hydras, corals,
Roundworms Hookworms
Ascaris, Trichinella, Necator