CHONDRICHTHYES


 * =**Phylum**= || Albert You, and Kim Anderson ||
 * **1 Examples** || Sharks and rays ||
 * **2 Habitats** || Ocean (salt water) ||
 * **3 Mode of feeding, digestive, excretory** || Ingest food into stomach; many teeth ||
 * **4 Internal Transport****(circulation & respiration)** || 5-7 gills depending on the species; 2 chamber heart; swim for oxygen; ectothermic; low metabolism; cartilage ||
 * **5 Symmetry & Support,**===Locomotion, body covering=== || denticles; mucous glands; fins; heterocercal tail ||
 * **6 Fertilization &Reproduction****(sexual/ asexual)** || internal testes; females have cloaca where the ovaries reside; right ovary contains more eggs ||
 * **7 Body Forms (life stage forms)** || internal fertilization; live birth or eggs; no parental care after birth ||
 * **8 Defense / senses/ response to environment** || more flexible; rough skin; jaws; streamline ||
 * **9 Nervous system** || denticles; sensitive skin ||
 * **10 Importance (how it fits into****the world)** || eats whale carcass; decomposer; carnivore ||
 * **Special Adaptations** || cartilage skeleton; boneless jaw; sleek skin w/ mucus ||