Name_____________________________________Per____________Date____________
TheEcologyReviewWorksheet
1.
Ecologyisthe________ofthe______________oforganismswithoneanotherandwiththeir______________.
2.
Fillinthelevelsoforganizationfromlargesttosmallestanddescribeeach.
___________________
______________________
______________________
a.
______________________
______________________
Howisapopulationdifferentthanacommunity?
3.
Nameatleast3bioticand3abioticfactorsintheecosystemtotheright
(ignorethenumbersonthediagram).
a. Biotic
b. Abiotic
4.
IntheCarbonCycle,Listatleast3waysCO2getsINTOofthe
atmosphere:
a.
HowdoesCO2getOUToftheatmosphere?
5.
Drawafoodchainbelow(showingtransferofenergy):indicatethesun,oneproducerandatleast3consumers.
6.
ExplaintheNitrogenCycle(includenitrogenfixationanddenitrificationinyouranswer).
7.
Whyisnitrogenimportant(*HINT:Whatdoweneeditfor)?
8. Whyarebacteriaimportanttous?Inwhichcycle(s)dowerelyonthem?
9.
Populationgrowthrateisaffectedbythesefourcomponents.
a.
Whichincreasethegrowthrate?Whichdecrease?
Name_____________________________________Per____________Date____________
10. Nameanddescribethreefactorsthatlimitpopulationgrowth.
11. Onthegraph,whatwouldexplainwhythepopulationlevelsoff
insteadofdecreasingdrastically?
12. Whatisthedifferencebetweenadensity-dependent(DD)ordensity-independent(DI)factor?
13. Identifythefollowingfactorsaseitherdensity-dependent(DD)ordensity-independent(DI)?
a. Freezingweather____________ b. Avolcaniceruption____________
c. Predation____________
d. Floodsorfires____________
e. Diseaseorparasites____________
f. Tendstobebiotic____________
14. Whatareinvasivespecies,andwhyaretheydisruptivetoanecosystem?
15. Asymbioticrelationshipinwhichoneorganismbenefitsandtheotherisharmediscalled_________________.
16. Asymbioticrelationshipwherebothorganism
benefitiscalled_____________________.
17. Asymbioticrelationshipinwhich
oneorganismbenefitsandtheotherisnot
harmediscalled______________.
18. Accordingtotheecologicalpyramidtotheright,
therearemanymore_______________thanthere
areprimaryconsumers.
19. Organismsthateatthesecondaryandtertiary
consumerswouldbe____________________.
Name_____________________________________Per____________Date____________
20. Whoaretheproducers:
21. Ratsare_____________________consumers.
22. Iftheproducersstartedwith6,000,000unitsofenergyhowmuchenergy
wouldbegiventoeachlevel(Filloutthepyramidtotheright).
23. Howisenergylostasyoumoveuptrophiclevels?
24. Whatisthedifferencebetweenanenergypyramidandabiomass
pyramid?
25. Ecologicalsuccessionrefersto_______________changesthatoccurtoa___________________overtime.
26. Howisprimarysuccessiondifferentfromsecondarysuccession?
27. Thefirstcolonizerstoappearduringecologicalsuccessionarereferredtoas________________________.
a. Whyaretheyimportanttotheecosystem?
28. Determineiftherecoveryprocessforanenvironmentwillhappenbyprimarysuccessionorsecondarysuccession:
a. Recedingglaciers:
b. Logginginaforest:
c. Majorflooding:
d. Volcaniceruption:
e. Forestfire: