EEOB 4510 Final Exam Questions and Answers Solved Correctly Rated A+

EEOB 4510 Final Exam Questions and Answers Solved Correctly Rated A+ symplesiomorphies of chordates - Answers 1)pharyngeal gill slits 2)dorsal, hollow nerve cord synapamorphies of chordates - Answers 1) post anal tail 2)notochord ***at some point during development synapamorphies of chordates excluding tunicates (starting at amphioxus) - Answers 1)hepatic caecum 2)myomeres synapamorphies of chordates starting at hagfish - Answers cranium lampreys - Answers agnaths -jawless -lack cranium -lack paired appendages Synapamorphies of vertebrates - Answers 1)head 2)trunk 3)tail jaws - Answers arose at gnathostomes (fish) paired appendages - Answers arose at gnathostomes (fish) basic anatomical plans -skeleton -musculature -viscera (kidney&tubes, digestive tract, esophageal evaginations, cloaca, coelomic division, etc.) - Answers arose at gnathostomes (fish) heart and aortic arches - Answers arose at gnathostomes (fish) 5 part brain (linear) - Answers arose at gnathostomes (fish) sense organs - Answers arose at gnathostomes (fish) cranial nerves (10) - Answers arose at gnathostomes (fish) transverse septum - Answers arose at gnathostomes (fish) Fish (placoderms) **ostracoderms = armored jawless fish - Answers -1st unequivocal vertebrates -1st w/ jaws and paired appendages -1st w/ lungs proximal appendicular support (shoulders, pelvis) - Answers arose in lungfish and tetrapods internal nares (change from nasal pit) - Answers arose in lungfish and tetrapods lungs (for air swallowing) - Answers arose in lungfish and tetrapods pulmonary/systemic heart circulation (some mix) - Answers arose in lungfish and tetrapods limbs (including manus and pes w/ digits) - Answers arose in tetrapods atlas (neck vertebra) - Answers arose in tetrapods