By: Rohan Rao, Yusuf Oner, Brandon Chic, Kevin Jun and Shyam Patel
Cnidaria: Germ Layers 2 Germ layers Ectoderm Endoderm
Cnidaria: Symmetry Radial
Cnidaria: Coelom Acoelomate – Lacks a body cavity A fluid filled cavity formed in the mesoderm
Cnidaria: Digestive Track Gastrovascular Digestive cavity with only one opening
Cnidaria: Cephalization None Nervous system below epidermis Network of nerves
Cnidaria: Segmentation None
Cnidaria: Skeleton and Appendages Hydrostatic skeleton
Cnidaria: Circulatory System No circulatory system
Cnidaria: Respiratory System No respiratory organs Oxygen is absorbed through both layers of skin Carbon dioxide is expelled through both
Cnidaria: Reproduction Sexual Asexual
Cnidaria: Habitat Shallow water Water H2O Aqueous solutions (mostly water) Land, but not really, only water 물 Woda Su 水 पानी ماء מים
Porifera: Germ Layers None
Porifera: Symmetry Nothing definite
Porifera: Coelom Acoelomate Lacks a cavity between the body wall and the digestive tract
Porifera: Digestive Tract No specialized digestive system
Porifera: Cephalization No cephalization
Porifera: Segmentation None
Porifera: Skeleton and Appendages Invertebrate No appendages
Porifera: Circulatory System No circulatory system Rely on a constant flow of water throughout their body
Porifera: Respiratory System No distinct system Water flow makes up for it
Porifera: Reproduction Asexual 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 sperm Travel to another sponge and fertilize the eggs there
Porifera: Habitat Spans the entire globe Quiet, clear waters More abundant in temperate waters