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20 Cards in this Set
- Front
- Back
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Climatically and geographically defined area of ecologically similar communities
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Biome
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What are the 4 biomes in Canada?
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Tundra, Taiga, Deciduous Forest and Grasslands
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What are the 3 types of symbiotic relationships?
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Commensalism, mutualism and parasitism
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What Abiotic Factors can vary in a lake?
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a) Amount of light
b) Oxygen levels c) pH d) Nutrient Levels |
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Define Biotic Potential
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maximum number of offspring a species can produce with unlimited resources
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Number of offspring per birth
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birth potential
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What are 3 factors that affect aquatic ecosystems?
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Chemical environment, temperature & sunlight and water pressure
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What is the upper level of the lake which warms up in summer?
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eplimnion
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What are 2 examples of environmental resistance?
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Temperature range, sun exposure, salinity and available gases
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What is carrying capacity?
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The number of individuals of a species that can be supported by an ecosystem.
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Who developed the classification systme (binomial nomenculture)?
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Carl Linneaus
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How many mass extinctions on the fossil record?
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5 mass extinctions
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Define Mutation.
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Any change in a cell's DNA that is passed on to the next generation (inheritable characteristic) usually occurs during DNA replication
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What was the super continent called?
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Pangea
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Who recorded the first theory of evolution?
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Jean Baptiste Lamark
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What was a major flaw in Lamark's theory?
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He said aquirred characteristics will be passed onto offsprong.
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What is Allo[atric Seperation?
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A species becomes geographically isolated by some physical barrier.
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Carbon dating is only effective on fossils up to how many years old?
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50 000
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Who wrote 'The Origin of The Species'?
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Charles Darwin
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What is the binomial nomenclature (latin name) for humans?
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Homo sapiens
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