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Cnidaria: Symmetry Radial
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By: Rohan Rao, Yusuf Oner, Brandon Chic, Kevin Jun and Shyam Patel
Cnidaria: Germ Layers2 Germ layers
EctodermEndoderm
Cnidaria: CoelomAcoelomate – Lacks
a body cavityA fluid filled cavity
formed in the mesoderm
Cnidaria: Digestive TrackGastrovascular
Digestive cavity with only one opening
Cnidaria: CephalizationNoneNervous system
below epidermisNetwork of nerves
Cnidaria: SegmentationNone
Cnidaria: Skeleton and AppendagesHydrostatic skeleton
Cnidaria: Circulatory SystemNo circulatory
system
Cnidaria: Respiratory SystemNo respiratory
organsOxygen is absorbed
through both layers of skin
Carbon dioxide is expelled through both
Cnidaria: ReproductionSexualAsexual
Cnidaria: HabitatShallow waterWaterH2OAqueous solutions (mostly
water)Land, but not really, only
water물WodaSu水पानीماءמים
Porifera: Germ LayersNone
Porifera: SymmetryNothing definite
Porifera: CoelomAcoelomate
Lacks a cavity between the body wall and the digestive tract
Porifera: Digestive TractNo specialized digestive system
Porifera: CephalizationNo
cephalization
Porifera: SegmentationNone
Porifera: Skeleton and AppendagesInvertebrateNo appendages
Porifera: Circulatory SystemNo circulatory
systemRely on a constant
flow of water throughout their body
Porifera: Respiratory SystemNo distinct systemWater flow makes
up for it
Porifera: ReproductionAsexual
After fragmentation (Parts of the sponge fall off and start to grow elsewhere)
By producing gemmules (releases them when dying, go dormant and start to grow when the environment is right)
By budding (new organism grows on another)
Sexual (Main)Sponge releases spermTravel to another sponge
and fertilize the eggs there
Porifera: HabitatSpans the entire
globeQuiet, clear watersMore abundant in
temperate waters