first hour exam id: eee105 password: prairie friday feb 8 noon here 100 points(of 500 for semester)...
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EEE (MC) Plants and animals are absolutely identical in the way they ____________. A. obtain energy B. respire C. apportion energy between their necessary life activities D. reproduce E. obtain nutrients Multiple choiceTRANSCRIPT
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First hour exam
http://life.uiuc.edu/animalbiology/105/ID: eee105Password: prAIRie
Friday Feb 8noon here
100 points (of 500 for semester)29 questions 57 bubbles
TEST REVIEW
If University-approved conflictSign up with Karin Nelson
by Wednesday’s lecture
Wed. Feb 6
Conflict Exam 5-7pm 100 Gregory
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EEE 105
2 Question Formats:
Multiple True-False
Multiple choice
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EEE 105
7. (MC) Plants and animals are absolutely identical in the way they ____________ .
A. obtain energy B. respire
C. apportion energy between their necessary life activities D. reproduce E. obtain nutrients
Multiple choice
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EEE 105(TF) Endosymbiosis is responsible for ________________ .
11. denitrification
12. nitrogen fi xation in plants13. nutrition of hydrothermal vent worms14. the origin of chloroplasts15. decomposition of dead organic matter
TF
F
TT
Multiple True-False
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Population EcologyEE
E 1 0
5
http://life.uiuc.edu/animalbiology/105/ID: eee105Password: prAIRie
Chapter 6Chapter 6
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limiting factors density-dependent
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limiting factors density-dependent
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Predation regulates prey populationsPredation regulates prey populationsPredation regulates prey populations
predation is “good” for the preypredation is “good” for the prey removes oldremoves old , diseased, diseased, young, young density-dependentdensity-dependent
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Predation regulates prey populationsPredation regulates prey populationsPredation regulates prey populations
predation is “good” for the preypredation is “good” for the prey removes oldremoves old , diseased, diseased, young, young density-dependentdensity-dependentpredator/prey interactionpredator/prey interaction
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limiting factors density-dependent
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Disease regulates populations
disease is “good” for the preydisease is “good” for the prey removes oldremoves old , diseased, diseased, young, young density-dependentdensity-dependentpredator/prey interactionpredator/prey interaction
epidemic wavesepidemic waves
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EnergyFood chain
E
producer primary secondaryconsumer consumer
Trophic levels
autotroph herbivore predator
respiration
decomposition
Photosynthetic food chain
parasites
parasites
parasites
each trophic level regulates population of its preyeach trophic level regulates population of its prey parasites (diseases) regulate population of hostsparasites (diseases) regulate population of hosts
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Population density also changes behaviorRats in 1/4 acre pens
all the food & water they needN
t
K 5,000
150
social behavior destroyedsocial behavior destroyed
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Predators can also regulate diversity
of their community
e.g. marine rocky coast intertidal zone
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Predators can also regulate diversity
A tide poolA tide pool
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dozens of speciesdozens of speciesa diverse communitya diverse community
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dozens of speciesdozens of speciesa diverse communitya diverse community
Starfish prey on mollusksStarfish prey on mollusks
when starfish removedwhen starfish removed
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Starfish prey on mollusksStarfish prey on mollusks
when starfish removedwhen starfish removed mussels overgrow everythingmussels overgrow everything
Starfish are keystone predatorsStarfish are keystone predators
many species wiped outmany species wiped out
They promote species diversityThey promote species diversity
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biotic potential
rmax = intrinsic rate of increase
dN/dt = N rmax
logistics curve
dN/dt = N rmax(K - N/K)
K = the carrying capacity
N
t
K
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r-strategy
rapid reproduction
N
t
K
“boom and bust”
pests are r-strategists
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K-strategy
N
t
K
large size, deliberate reproduction
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r-strategist K-strategist
r- and K-strategies contrasted
population growth small
slow fast large body size
many
offspring survival
low high
high low parental care
few offspring #
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r strategyr strategy K strategyK strategy
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EnergyFood chain
E
producer primary secondaryconsumer consumer
Trophic levels
autotroph herbivore predator
respiration
decomposition
Photosynthetic food chain
parasites
parasites
parasites
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EnergyFood chain
E
producer primary secondaryconsumer consumer
Trophic levels
autotroph herbivore predator
respiration
decomposition
Photosynthetic food chain
parasites
parasites
parasites
parasites are r-strategists
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Secondary succession
r strategyr strategy K strategyK strategy
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End of Materialfor First Hour Exam