MSC 230 Study Guide - Midterm Guide: Chondrichthyes, Earless Seal, Osteichthyes

• School: University of Miami
• Department: Marine Science
• Course: MSC 230
• Professor: Glynn Peter

Document Summary

5 paired appendages decapods shrimp, crill amphipods and copepods eating appendages are mandibles basically go back and forth and chop range of morphologies but have this common attribute be aware of different forms! Calicerates and mandibulates opposing have rigid structure reproduction has unique larvae have separate sexes and a planktonic stage. Have anatomical features that are common to vertebrate. Hollow nerve tube analogous to spinal column/cord. Gill slits do not have true gills like fish. 2 major groups those that lack jaws ( cartilaginous skeletons) do not have true developed gills, but rather developed pouches that allow for gas exchange do not have scales no vertebrae lampreys and hagfish agnathans. Open and close mouth pump water actively for water exchange over their gills. Exchange of oxygen and get rid of co2. Spiral valve break up food and allow the organism to get nutrients out of it.