BIO CH: 41-42
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24 Terms
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competition
neither organism benefits (-/-)
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predation
one benefits at the cost of another (+/-)
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parasitism
one is harmed while the other is hosted and benefits (+/-)
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mutualism
both benefit from relationship (+/+)
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Batesian Mimicry
non-poisonus mimics patterns/colors of poisonus animal without producing poison
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Mullerian Mimicry
similar coloration and patterns, 2 poisonus animals
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Competitive exclusion principle
no 2 similar species can occupy the same niche at the same time
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niche
the role an organism plays in a community
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according the competitive exclusion principle, what happens when two species with the same niche compete for a resource
extinction of one of the species will occur
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key stone species
an organism that helps define/support an entire ecosystem
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what happens when a keystone species is remmoved from a community
community falls apart, invasive species takeover, over populated with certain species…etc
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primary succession
newly expose/formed rock is colonized by living things for the first time (CREATES NEW SOIL)
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secondary succession
an area that was previously occupied by living things is disturbed, then re-colonized following the disturbance (HAS OLD SOIL)
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Identify four common tropic levels in ecosystems
Plant, primary consumers (herbivore), secondary consumers (carnivore), tertiary consumers (top predators)
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Net productivity (NPP)
the amount of organic substance stored by autotrophs or producers in unit time per unit area
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Gross Primary Productivity (GPP)
to the amount of organic substance synthesized by the producers in unit time per unit area.
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what is the 10% rule
only 10% of the energy from an organism is passed on to the next trophic level, the other 90% is lost as heat and is released into the atmosphere
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Biological magnification
the increasing concentration of a substance, such as a toxic chemical, in the tissues of organisms at successively higher levels in a food chain.
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commensalism
one organism is benefited while the other is not affected
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K
carrying capacity
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N
population size
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t
time
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r MAX
when max growth rate is needed
if rate is faster then growth is faster
if rate is faster then growth is faster
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types of defesnive adaptations
\-mechanical
\-chemical
\-aposematic coloration
\-cryptic coloration
\-batesian mimicry
\-mullerian mimicry
\-chemical
\-aposematic coloration
\-cryptic coloration
\-batesian mimicry
\-mullerian mimicry
Note 
Flashcards (20)