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Short Film

Great Transitions: The Origins of Tetrapods Student Quiz

_________________________________ _____________________NAME DATE

1. WhenCharlesDarwinconsideredsomeoftheuniquestructuresfoundinmodernanimals,likethefeatheredwingsofbirds,hefamouslyproposedthatmodernanimalsmusthaveevolvedfromearlierformsthatlackedthosestructures.Healsopredicted________________.(Fillintheblankwithoneofthestatementsbelow.)

a. thatitwouldbeimpossibletofindfossilevidenceforthisideabecausethefossilrecordissoincomplete.

b. thatgeneticevidencewouldshowthatallorganismsshareacommonancestor.

c. thatfossilswouldbefoundwithstructuresthatareintermediatebetweenearlyandmodernforms.

d. thatfossilevidencewouldinsteadshowthatallmodernanimalshavealwaysexistedintheirpresentform.

2. WhichofthefollowingfeaturesdescribeTiktaalik?

i. Neck

ii. Lungs

iii. Roundhead

iv. Fins

a. iiandivonly

b. i,ii,andiv

c. i,iii,andiv

d. i,ii,iii,andiv

3. Examinethetablebelowandselecttherowthatbestdescribesthesetting,resources,andscientificprocessesusedduringtheTiktaalikexpeditions.

Location Maps/Photos ScientificProcessa. CanadianArctic Geologicalmaps Hypothesestestingb. Iceland Roadmaps Predictingc. Alaska Aerialphotos Questioningd. ArcticCircle Animaltrackmaps Developingexplanations

PublishedNovember2014www.BioInteractive.org RevisedMarch2017 Page2of4

Short Film Great Transitions: The Origins of Tetrapods Student Quiz

4. Whichstatementbelowisevidencethatalltetrapodssharedasinglecommonancestor?

a. Alltetrapodslivepartlyinwaterandpartlyonland.

b. Alltetrapodsarewarm-blooded.

c. Alltetrapodlimbsconsistofrearrangedfishfinrays.

d. Alltetrapodlimbshaveacommonpatternofonebone,twobones,manybones,thendigits.

5. Thetransitionfromfishtotetrapodsisbestdescribedas:

a. Likemostofthegreattransitionsinevolutionaryhistory,ithappenedinveryfewbigstepssothatthereareveryfewintermediateforms.

b. Likemostofthegreattransitionsinevolutionaryhistory,ithappenedinmanysmallstepsleadingtomanyintermediateforms.

c. Likenoothertransitioninevolutionaryhistory,ithappenedinmanysteps,sotherearemanyintermediateforms.

d. Likemostofthegreattransitionsinevolutionaryhistory,ithappenedinasinglestepwithnointermediateforms.

6. Whichevidencesupportsthefactthattetrapodsandfisharecloselyrelated?

i. Theembryosofmodernfishandtetrapodlooksimilar.

ii. Bothmodernfishandtetrapodscanswim.

iii. Bothmodernfishandtetrapodsarevertebrates.

iv. TheDNAofmodernfishandtetrapodssuggeststhattheyhaveacommonancestor.

v. Modernfishhavelimbbonesthatsupporttheirbodies.

a. i,ii,andvonly

b. i,iii,andivonly

c. iiiandvonly

d. itovareallsupportingevidence

7. TrueorFalse.“Transitionalorganismsarenotactualspecies.”Justifyyouranswerinoneortwosentences.



8. Studythegraphicbelowofrocklayerswithfossilsinthem.ExplainhowNeilShubinandhisteampredictedthattheywouldfindafossilanimallikeTiktaalikinrocksaround375millionyearsold.

9. Thediagramsbelowillustratethebonesintheforelimbsoffourdifferentorganisms.Althoughtheselimbs

alllookdifferent,theysharesomecommonpatterns.Thesecommonpatternssuggestthat

a. Theseorganismsaremembersofthesamespecies.

b. Theorganismsexistedataboutthesamepointintime.

c. Theseorganismsshareacommonancestor.

d. Theseorganismshaveexactlythesamegenes.



10. ExplainwhyNeilShubinandhiscolleagueshadtotraveltoanareaabovetheArcticCircletofindthefossilofananimalthatoncelivedinawarmswamplikehabitat.

11. Inthefilm,NeilShubinisshownhikinguparockyhillsidewhilerecallingforusoneoftheexcitingmomentsduringthehuntforaTiktaalik-likefossilanimal.Neilsays,“Beneathourfeetwerefossilfishbones,fragmentsoffossilfishbones,manythousandsofpieces.Itwasn’tjustonefish;itwasawholeaquarium,itwasdifferentspecies.”Whatdidthisdiscoverymeanforthefossil-huntingteam?