CNIDARIA+&+CTENOPHORES

CN-Cnidaria CT-Ctenophores || CT-comb jellies || CT-marines || CN-use cnidocytes on tentacles to capture food, carnivores CT-use colloblasts on tentacles to capture food, mostly feed on plantons || -no muscles but cells contract for movement -CT use cilia for locomotion (the only animal) || CT-sexual || -medusa: floating "jelly fish" stage || -CT:an aboral sensory organ functions in orientation || -CT:nerves run from the sensory rgan to the combs of cilia ||
 * =**Phylum**= || Jade
 * **1 Examples** || CN-hydras, jellies, sea anemones, coral animals
 * **2 Habitats** || CN-mostly marines, a few freshwater
 * **3 Mode of feeding, digestive, excretory** || A single opening functions as both mouth and anus, digest in gastrovascular cavity
 * **4 Internal Transport****(circulation & respiration)** || both accomplished by diffusion ||
 * **5 Symmetry & Support,**===Locomotion, body covering=== || -raidal
 * **6 Fertilization &Reproduction****(sexual/ asexual)** || CN-asexual through budding; sexual in medusa stage
 * **7 Body Forms (life stage forms)** || -polyp:sessil stage
 * **8 Defense / senses/ response to environment** || -CN: use cnidocytes for defense; detect or respond to stimuli equally from all directions
 * **9 Nervous system** || -CN:simple muscles and nerves;no brain; movements are coordinated by a nerve net which is associated with receptors around the body
 * **10 Importance (how it fits into** **the world)** || tropical corls provide habitat for a diversity of inverterates and fishes ||
 * **Misc.** || Many symbionts like PS protists live w/in ||