BIO 152 EXAM 4 DR. JONES QUESTIONS WITH CORRECT ANSWERS RATED A+ SURE PASS!!!

BIO 152 EXAM 4 DR. JONES
QUESTIONS WITH CORRECT
ANSWERS RATED A+ SURE PASS!!!
Transpirationn-
nCORRECTnANSWERSnMoisturenisncarriednthroughnplantsnfromnrootsntonsmallnporesnonnundersideno


fnleaves,nwherenitnchangesntonvapornandnreleasednintonatmosphere.



Lumenn-nCORRECTnANSWERSnInsidenspacenofnantubularnstructure.



Cuticlen-nCORRECTnANSWERSn-
nWaxy,nhydrophobicnsubstancenthatnisnproducednbynthenepidermalncells.n



-nCoatsnouternsurfacen

-nLownpermeability

-nOnntopnandnbottomnofnleaf



Epidermalncellsn-nCORRECTnANSWERSn-nFlatncellsnonntopnandnbottomnofnleafn

-nItnsecretesncuticle

-nAnbarriernthatnmakesncuticle

-nNotnphotosyntheticn

-nNonmaturenandnfunctionalnchloroplastsninnthesencells



Stoman-nCORRECTnANSWERSn-
nThenentirenstructurenofnthenporenvsnguardncellsn=nstoma.nGuardncellsncontrolnthesenpores.n



-nOpeningsninnthenleafnsurroundednbynguardncells.nGasnexchangenofnCO2nandnO2noccursnhere.

,Photorespirationn-
nCORRECTnANSWERSnProcessnwherebynplantntakesninnoxygennandngivesnoutncarbonndioxide




Advantage/disadvantagenofncuticlen-nCORRECTnANSWERSn



Advantage/disadvantagenofnstomatan-nCORRECTnANSWERSn



Mesophylln-nCORRECTnANSWERSn-n"middlenleaf"nwherenphotosynthesisntakesnplace.

-
nPalisade:ntopnpart.nTallnskinnyncellsnthatnarenverticallynorientednandncapturenthenmostnsunlight.nTh


eynarentightlynpackednandnmaynbenpresentninnone,ntwo,nornthreenlayers.n

-
nSpongynmesophyll:nlooselynarrangedncellsnofnirregularnshape.nAirnspacenallowsngaseousnexchangen


betweennthenleafnandnthenoutsidenatmospherenthroughnthenstomata.nAquatically,nthenspacesnallo
wnitntonflood.n

-nThesentwonlayersncontainnchloroplasts



GuardnCellsn-
nCORRECTnANSWERSnOpennandnclosenstomata.nKeepsnasnmuchnH2Oninnthenplant,nbutnallowsnasnmu


chnCO2nasnpossiblenintonthenplant.



Whatncausesnguardncellsntonclose?n-nCORRECTnANSWERSn-nDarkness

-nDroughtn

-nColdn

-nPathogens

-nAbscisicnacidn(ABA)



Whatncausesnguardncellsntonopen?n-nCORRECTnANSWERSn-nlightn

, -nlightnCO2n

-nAuxin



MechanismnofnOpeningnofnGuardnCellsn-nCORRECTnANSWERSn-nOpen:

- Light,nlownCO2ninside
n n



- Turnsnonnionnpumps
n n



- Increasesnosmolaritynofnguardncell
n n



- Waternflowsnintonguardncelln
n n



- Pressurenonnwallsnopensnstoma
n n




MechanismnofnClosednofnGuardnCellsn-nCORRECTnANSWERSn-nClosed:n

- ABAnhormonenorndry
n n



- OpennIonnchannels
n n



- Ionsnflownoutnofncell
n n



- Waternflowsnoutnofnguardncelln
n n



- Decreasednpressurenclosesnstoma
n n




SummarynofnGuardnCellsn-nCORRECTnANSWERSn-
nUptakenofnsolutesnbynguardncellsncausesnwaterntonbendrawnninnbynosmosis.nAsnthenguardncellsnswel


l,nthenbownapart,nopeningnstoma

-nReleasenofnsolutesncausesnwaterntonflownoutnofnguardncells,nclosingnthenstoma



CO2nUptakeninnLeavesn-nCORRECTnANSWERSn-
nMesophyllncellsnnearnthenuppernsurfacenofnthenleafnhavenancolumnarnarrangementnthatnmaximizes


nlightninterception.n



-
nMesophyllncellsnclosentonthenstomatanhavenanhoneyncombnlikenarrangementntonallownCO2ntonsprea


dneasilynthroughoutnthenleaf.n