Lab_10_Worksheet_Key

Lab_10_Worksheet_Key - NAME _KEY_ SECTION _ EFB285 -...

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NAME ________KEY __________ SECTION ______ EFB285 - ZOOLOGY LAB LAB 10 General Question 1. What are the 5 shared derived characteristics of chordates? (1) dorsal hollow nerve cord , (2) subpharyngeal gland/endostyle , (3) notochord , (4) pharyngeal gill slits , (5) post-anal tail **All 5 must be correct for credit Station 1 – Dogfish Demos 2. Why does a shark need to slow down the rate of food passage in its spiral valve intestine? To increase contact with walls of the intestine for digestion to occur 3. Is this specimen a male or a female? How can you tell? TA will determine sex of the shark during lab Males have claspers, females do not Station 2 – Marine Fish Demos 4. Pick one of the fish at the station. Based on its body type, where do you think it would live and why? (Example: because of the location of the eyes, the fin orientation, and its flat shape, the flounder is probably a bottom dweller) Just looking for some insight from the students on this one Station 3 – Embryos and Aging
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This homework help was uploaded on 04/10/2008 for the course EFB 285 taught by Professor Fierke during the Spring '08 term at Syracuse.

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