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1. Allied American University BIO 130
Module 6
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BIO 130 MODULE 6 CHECK YOUR UNDERSTANDING
1. An areawithlowamountsof rainfall andmoderate temperatureswilldevelopa__________
biome.
a. desert
b. temperate deciduousforest
c. temperate grassland
d. tundra
Hint:Section16.4
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9R:Describe the effectof temperature andrainfall tothe kindof biome thatdevelops.
1
2. If a habitatiswhere youlive,aniche is:
a. whatyou do there.
b. where yousleep.
c. the same thing.
d. none of the choicesapply.
Hint:Section16.2
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9L:Distinguishbetweenniche andhabitat.

2. 0
3. An organismthatcarriesa disease betweenhostsisa:
a. parasite.
b. predator.
c. vector.
d. all of the choicesapply.
Hint:Section16.3
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9P:Listtypical abioticandbioticcharacteristicsof differentbiomes.
1
4. These organismslive eitherattachedtoa substrate or free-livingonthe oceanfloor.
a. Benthic
b. Plankton
c. Pelagic
d. Littoral
Hint:Section16.5
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9N:Describe anorganism’sniche,habitat,andcommunity.
1
5. The biome withthe fewestseasonal changesisthe:
a. temperate deciduousforest.
b. grassland.
c. tropical rainforest.
d. boreal coniferousforest.
Hint:Section16.4

3. SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9R:Describe the effectof temperature andrainfall tothe kindof biome thatdevelops.
0
6. Whichof the followingislikelytohave the highestbiomassinanecosystem?
a. Grasshopper
b. Frog
c. Cow
d. Grass
Hint:Section15.1 and Section15.2
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9H:State the benefitsandshortcomingsof usingeachof the following:pyramidof numbers,pyramid
of biomass,andpyramidof energy.
1
7. The amount of plantbiomassinan area may increase if there isanincrease inthe amountof:
a. symbioticnitrogen-fixingbacteria.
b. succession.
c. competition.
d. denitrifyingbacteria.
Hint:Section15.4
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9C:State the importance of bacteriainnutrientcycles.
1
8. Decomposers:
a. are unimportantlinksinafoodweb.
b. recycle organictoinorganiccompounds.

4. c. cause disease anddestruction.
d. require asource of lightenergy.
Hint:Section15.2
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9D:Examine the role of decomposers.
1
9. An animal thatfeedsonlivingmaterial,butdoesnotkill the animal itfeedson,isa:
a. prey.
b. host.
c. parasite.
d. predator.
Hint:Section16.3
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9K:Differentiateamongpredation,mutualism, competition,parasitism, andcommensalism.
1
10. If the worldwere tosupportthe largestpossible humanpopulation,all humans wouldneedto
be:
a. carnivores.
b. omnivores.
c. herbivores.
d. producers.
Hint:Section15.2 and Section15.3
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9G:Identifythe trophiclevelsoccupiedbyherbivoresandcarnivores,andwhytheyare called
consumers.
1

5. 11. Populationcontrol factorsthatarise fromoutside of the populationare called:
a. extrinsiclimitingfactors.
b. density-independentlimitingfactors.
c. intrinsiclimitingfactors.
d. density-dependentlimitingfactors.
Hint:Section17.4
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9U:Identifythe factorsthatultimatelylimitpopulationsize.
1
12. If a forestfire destroysaregionof the forest,whichof the followingwill occur?
a. Secondarysuccession
b. Primarysuccession
c. A climax communitywillbe presentinthe burnedarea
d. None of the choicesapply
Hint:Section16.6
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9O:Determine the effecthumanshave hadonnatural climax ecosystems.
1
13. Whichone of the followingbestillustratesadensity-dependentlimitingfactor?
a. A farmerusesinsecticidetokill large numbersof insectpests.
b. Asthe human population rises,more people will starve.
c. In the springof the year,manyanimalsdisperse tonew locations.
d. Plantsusuallyhave difficultygettingenoughoxygen.
Hint:Section17.4
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.

6. LO9V:State whythe humanpopulationmusthave anupperlimit.
1
14. The euphoticzone isthat regionof the oceanwhere:
a. photosynthesisoccurs.
b. there isa warm temperature.
c. sessile organismsare supported.
d. there isalwayslight.
Hint:Section16.5
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9S:State whysome plantsand animalsare foundonlyincertainpartsof the world.
0
15. The difference betweenanecosystemanda communityisthatthe ecosystemhassomethinga
communitydoesnothave;the ecosystemhas:
a. producers.
b. consumers.
c. nonlivingparts.
d. interactingspecies.
Hint:Section15.1 and Section15.2
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9N:Describe an organism’sniche,habitat,andcommunity.
0
16. The amount of rain an area getsispart of an organism's:
a. bioticfactors.
b. abioticfactors.
c. community.
d. succession.

7. Hint:Section15.1
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9P:Listtypical abioticandbioticcharacteristicsof differentbiomes.
1
17. Transpirationis:
a. the processby whichbacteriaconvertsammoniaintonitrate.
b. a type of symbioticrelationship.
c. the accumulationof a pesticide asitmovesthrougha foodchain.
d. the lossof water fromplantsurfaces.
Hint:Section15.4
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9S:State whysome plantsand animalsare foundonlyincertainpartsof the world.
1
18. As the size of the wolf populationinYellowstoneNationalParkhasincreased,manywolveshave
migratedfromthe park intoareasaround the park. Thismigrationisthe resultof:
a. populationpressure.
b. sex ratiochanges.
c. natality.
d. gene frequencychanges.
Hint:Section17.1
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9U:Identifythe factorsthatultimatelylimitpopulationsize.
1
19. The way individualswithinapopulationare arrangedwithrespecttoone anotheriscalled
population:
a. diversity.

8. b. density.
c. logistics.
d. distribution.
Hint:Section17.1
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9X:Define apopulationandidentifykeycomponentsthataffectpopulationgrowth.
1
20. People wholive inpoorcountrieshave dietsthatare made upprimarilyof plantmaterials.This
isbecause:
a. plantfoodsare lessexpensive thananimal foods.
b. many calorieswouldbe lostif theyfedplantstoanimals.
c. more people canbe supportedat the herbivore levelthanatthe carnivore level.
d. all of the choicesapply.
Hint:Section15.5
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9J:Explainwhypeople inpoorcountrieseatmostlyplantmaterial.
1
21. SpeciesA andSpeciesBboth benefitbylivingtogether.Thisisanexample of:
a. competition.
b. commensalism.
c. mutualism.
d. succession.
Hint:Section16.3
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9K:Differentiateamongpredation,mutualism, competition,parasitism, andcommensalism.
1

9. 22. A pelagicanimal is:
a. sessile.
b. a filterfeeder.
c. a larval form.
d. a free swimmer.
Hint:Section16.5
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9S:State whysome plantsand animalsare foundonlyincertainpartsof the world.
1
23. At present,the humanpopulationis:
a. inthe deathphase.
b. growingrapidly.
c. stable.
d. inthe lag phase.
Hint:Section17.7 and Section17.8
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9V:State whythe humanpopulationmusthave anupperlimit.
1
24. Whichinteractionswithotherorganismswill helptodetermine the carryingcapacityof earth
for humans?
a. Cuttingof forestto increase agricultural land
b. Interracial mating
c. Human deathas a resultof war
d. Slightchange insex ratio
Hint:Section17.7 and Section17.8
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.

10. LO9U:Identifythe factorsthatultimatelylimitpopulationsize.
1
25. The most destructive activityof humansthathasledtomany extinctionsis:
a. predatorcontrol.
b. pesticide use.
c. biomagnification.
d. habitatdestruction.
Hint:Section16.7
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9O:Determine the effecthumanshave hadonnatural climax ecosystems.
1
26. Available energy,inpart, determinethe:
a. carryingcapacity.
b. gene flow.
c. reproductive potential.
d. all of the choicesapply.
Hint:Section17.5
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9W:Specifythe importance of birthratesanddeathratestopopulationgrowth.
0
27. Climate change (global warming) isdirectlyrelatedto:
a. the amountof carbon dioxide inthe atmosphere.
b. humanseatingprotein.
c. the lossof carbon dioxide fromthe oceans.
d. the size of the humanpopulation.

11. Hint:Section15.5
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9R:Describe the effectof temperature andrainfall tothe kindof biome thatdevelops.
1
28. A populationisnotchanginginsize duringthe ______________ phase.
a. death
b. exponential
c. stable equilibrium
d. none of the choicesapply.
Hint:Section17.3
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9U:Identifythe factorsthatultimatelylimitpopulationsize.
1
29. The carrying capacityof an area fora plantismost likelydeterminedby:
a. accumulationof waste products.
b. availabilityof rawmaterial andenergy.
c. constantbirthrate.
d. lowbioticpotential.
Hint:Section17.6
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9N:Describe anorganism’sniche,habitat,andcommunity.
0
30. An animal thateatsboth plantsandanimalsis:
a. a herbivore.
b. an omnivore.

12. c. a carnivore.
d. decomposer.
Hint:Section15.2
SLO9:Describe the fundamentalprinciplesof ecologyandecosystems.
LO9G:Identifythe trophiclevelsoccupiedbyherbivoresandcarnivores,andwhytheyare called
consumers.
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BIO 130 MODULE 6 HOMEWORK ASSIGNMENT
SLO9: Describe the fundamental principlesof ecologyandecosystems.
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ASSIGNMENT-SLO9-Describe-the-fu-23733