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20 Cards in this Set
- Front
- Back
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What is a biome?
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A large geographical region with specific ranges in temperatures and precipitaion.
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What is muskeg?
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Soil above the permafrost that is swampy or boggy in the summer.
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What is an ecotone?
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A transition area between ecosystems.
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What is an ecological niche?
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An organisms role in an ecoststem, consisting of its place in the food web, its habitat, its breeding area, and the time of day in which it is most active.
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Name the zones of a lake and what plant life exist within them.
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Profundal-no plant life, not enough light for photosynthesis.
Limnetic-Phytoplankton. Littoral-Many aquatic plants and algae. |
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Name the layers of soil in order from top to bottom.
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litter, topsoil, hummus, subsoil, bedrock.
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What is hummus?
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Decaying plant and animal matter.
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In what seasons do lakes turnover?
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Spring and fall.
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Give the Different levels of a lake and their definitions.
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Epilimnion-the upper level of the lake which warms up in the summer.
Hypolimnion-The lower level of a lake which remains at a low temperature. Thermocline-The zone in between the two in which the temperature changes rapidly. |
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What is biotic potential?
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The maximum number of offspring that a species could produce.
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What is binomial nomenclapture?
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A method of naming organisms by using two names.
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What is genus?
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The first part of a binomial name.
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What is a species?
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A group of organisms that appear similar and can reproduce with one another.
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What is radiometric dating?
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The tequnique used to determene the age of a rock or fossil.
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What is endemic?
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A species that is found in one location only.
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What is a homologous feature?
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Similar structures but different functions.
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What is analogous features?
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Similar in appearance and fuction but do not appear to have the same evolutionary origin.
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What is allopatric speciation?
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Speciation by reproductive isolation.
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What is divergent evolution?
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Evolution into many different soecies.
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What is speciation?
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The creation of a new species.
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