Cnidarian

Author: Lilly Kraus
__**EXAMPLES**__: Jelly Fish: Coral:

__**HABITAT**__: The habitat for Cnidaria is exclusvely aquatic and generally a marine environment,

__**TYPE OF COELOM:**__ Cnidaria, including, hydra, jellyfish, coral, and sea anemones do not have a coelom. Instead, they have gastric pouches.


 * __ENDOSKELETON or EXOSKELETON__:** Cnidaria can have either an exoskeleton or an endoskeleton.


 * __TYPE OF NERVOUS SYSTEM__:** Cnidaria have no brain or central nervous system, instead they have "nerve nets" made up of neurons that respond to stimuli around them.

__**FEEDER**__: Many cnidaria are preditors but they also can obtain organic nutrients, extract nutrients from the water and get some from the symbiotic algae that lives in them.

__**SYMMETRY**__: Radial

__**REPRODUCTION**__: Cnidaria can reproduce using both asexual and sexual reproduction.

__**CIRCULATORY SYSTEM**__: Cnidaria have no specific circulatory system.

__**ENDOTHERMIC or EXOTHERMIC**__. Exothermic

__**SEGMENTATION**__: No segmentations

__**WORKS CITED**__: "Chapter 7: Phylum Cnidaria." University of Arizona, Department of Geosciences. Web. 29 Mar. 2011. .

"Cnidaria." Wikipedia, the Free Encyclopedia. 28 Mar. 2011. Web. 29 Mar. 2011. .

Fautin, Daphne G. and Sandra L. Romano. 1997. Cnidaria. Sea anemones, corals, jellyfish, sea pens, hydra. Version 24 April 1997. http://tolweb.org/Cnidaria/2461/1997.04.24 in The Tree of Life Web Project, http://tolweb.org/