Practice Final_2010

Practice Final_2010 - NAME: _ pg 1 EEMB 106, BIOLOGY OF...

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NAME: _____________________________ pg 1 EEMB 106, BIOLOGY OF FISHES FINAL EXAMINATION FALL 2010 – please place your name on all sheets (worth 1 point if done correctly) 1) Mark true (T) or False (F) ( 1 point each ) _____ After leaving the heart, the blood of teleosts travels to the gills. _____ Abiotic factors such as currents can form an effective barrier to successful colonization by adults, but not by larvae. _____ Endemic species are found across broad geographic ranges. _____ Pheromones are detected by hair cells in the nares. _____ The pars inferior is used only for balance in teleosts. _____ Mauthner cells function in the startle response. _____ Elasmobranchs are extremely sensitive to high frequency sounds. _____ Gill lamellar thickness tends be high in sluggish fishes that live in cold water. _____ The oval organ is used to secrete gases into the swimbladder. _____ Secondary freshwater fish species disperse more slowly than primary freshwater fish. __ _ __ The swimming motion known as the "Karman gait" exploits the energy of eddies to minimize fish muscle activity. _____ Because fresh water freezes more easily than sea water, freshwater fish have more of a problem with freezing than marine fishes. _____ Tunas use undulatory motion to propel themselves rapidly through the water. _____ Placoid scales are flattened, heavy, bony plates. _____ Fishes continue growing after reaching maturity. _____ Boyle’s Law states that at constant temperature, volume varies inversely with absolute pressure. _____ Teleosts have 4 gill arches on each side. _____ Deep sea fish have short life-spans and increased incidence of sex-change. _____ The protractors and retractors raise and lower the dorsal fin spines and rays.
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NAME: _____________________________ pg 2 2) For each term, define and give one example species (common or scientific name). ( 8 points ) i) Osmoconformer: ii) Osmoregulator: iii) Hyposmotic species: iv) Hyperosmotic species: 3) A. Two historical processes that determine the distribution of a taxon are called dispersal and vicariance. Briefly define and distinguish each term. (6 points) Dispersal – Vicariance – B. The primary freshwater fishes of the family Cichlidae are found in South America, Southern Africa, and India. What historical process best explains this distribution? Explain your answer. (5 points)
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NAME: _____________________________ pg 3 4) FISH 1 FISH 2 A. Which ‘hypothetical’ fish is more derived (e.g “modern”)? (3 points) B . Name 3 characters that led you to your conclusion in part A and briefly describe the evolutionary advantage of these characters. (6 points) Character Evolutionary Advantage i) ii) iii)
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Practice Final_2010 - NAME: _ pg 1 EEMB 106, BIOLOGY OF...

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