Jawless+Vertebrates


 * =**Phylum**= || Ellie R. ||
 * **1 Examples** ||  ||
 * **2 Habitats** ||  ||
 * **3 Mode of feeding, digestive, excretory** ||  ||
 * **4 Internal Transport****(circulation & respiration)** ||  ||
 * **5 Symmetry & Support,**===Locomotion, body covering=== ||  ||
 * **6 Fertilization &Reproduction****(sexual/ asexual)** || Sexual, lay eggs. Fertilization and development are both external. There is no parental care. Most species are hermaphrodites. ||
 * **7 Body Forms (life stage forms)** || Live as larvae for years, then mature into adults (usually happens as they migrate from freshwater streams to seas or lakes). ||
 * **8 Defense / senses/ response to environment** || Armor of body plates. Can secrete large amounts of goo if under attack, which coats gills of predator fish and can send it into a retreat or even suffocate it. ||
 * **9 Nervous system** || Have a nerve cord running the length of the notochord. Have round mouth (used for sucking) and large eyes. ||
 * **10 Importance (how it fits into****the world)** || Mudsuckers and suspension feeders, take in sediments. Ingest sick or dead fish. ||
 * **Misc.** || Hagfish is considered the most primitive living vertebrate. ||