EEOB 4510 Final questions with 100% complete solutions

EEOB 4510 Final questions with 100%
complete solutions

symplesiomorphies of chordates - correct answer ✔✔1) pharyngeal gill slits

2)dorsal, hollow nerve cord



synapomorphies of chordates - correct answer ✔✔1) post anal tail

2)notochord



***at some point during development



synapomorphies of chordates excluding tunicates (starting at amphioxus) - correct answer ✔✔1)hepatic
caecum

2)myomeres



synapamorphies of chordates starting at hagfish - correct answer ✔✔cranium



lampreys - correct answer ✔✔agnaths

-jawless

-lack cranium

-lack paired appendages



Synapamorphies of vertebrates - correct answer ✔✔1)head

2)trunk

3)tail



jaws - correct answer ✔✔arose at gnathostomes (fish)

, paired appendages - correct answer ✔✔arose at gnathostomes (fish)



basic anatomical plans

-skeleton

-musculature

-viscera (kidney&tubes, digestive tract, esophageal evaginations, cloaca, coelomic division, etc.) - correct
answer ✔✔arose at gnathostomes (fish)



heart and aortic arches - correct answer ✔✔arose at gnathostomes (fish)



5 part brain (linear) - correct answer ✔✔arose at gnathostomes (fish)



sense organs - correct answer ✔✔arose at gnathostomes (fish)



cranial nerves (10) - correct answer ✔✔arose at gnathostomes (fish)



transverse septum - correct answer ✔✔arose at gnathostomes (fish)



Fish (placoderms)

**ostracoderms = armored jawless fish - correct answer ✔✔-1st unequivocal vertebrates

-1st w/ jaws and paired appendages

-1st w/ lungs



proximal appendicular support (shoulders, pelvis) - correct answer ✔✔arose in lungfish and tetrapods



internal nares (change from nasal pit) - correct answer ✔✔arose in lungfish and tetrapods



lungs (for air swallowing) - correct answer ✔✔arose in lungfish and tetrapods