Characterization of Cnidarian identity

Question

How are Cnidarian identity characterized according to illustrations of representing beings, fundamental morphology, kind of symmetry, germ layers and coelom, respiratory system, digestive system, excretory system, circulatory system, nervous system and kinds of reproduction?

Answer 1

Illustrations of representing beings: jellyfish, sea anemones, corals and hydra. Basic morphology: medusa or polyp. Kind of symmetry: radial. Germ layers and coelom: acoelomate and diploblastics. Digestive system: not complete. Respiratory system: non-existent. Circulatory system: non-existent. Excretory system: non-existent. Nervous system: diffuse. Kinds of reproduction: sexual and asexual and with larval phase and metagenesis.