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20 Cards in this Set
- Front
- Back
R selected species
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Opportunistic species which often show exponential growth
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Carrying capacity
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The maximum population size that can be supported by the avaliable resources, K
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Mutualism
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A symbiotic relationship where both organisms benefit
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Food web
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Describes all the feeding relationships within a community
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Decomposer
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A consumer that derives its energy from organic wastes and dead organisms representing all trophic levels
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Saprobe
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An organism that acts as a decomposer by absorbing nutrients from dead organic matter
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Omnivore
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Organisms that eat both plants and animals
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Competitive Exclusion Principle
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The hypothesis that 2 species with identical niches cannot coexist in the same habitat
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Abiotic factor
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Nonliving factor that affects the community
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Pyramid of numbers
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A relationship showing the numbers of organisms in each trophic level
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Food chain
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The transfer of energy from one organism to the next
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Pyramid of energy
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Grpahical relationship of how energy flows from one trophic level to the next
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Succession
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A gradual process of one community replacing another
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Niche
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The role an organism plays, how it interacts in the environment
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Biosphere
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The zones of air, land, and water occupied by all living things
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Biome
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One of the major types of distinctive plant communities
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Logistic growth
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A model describing population growth that levels off as population size approaches carrying capacity
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Population
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A group of the same species living together in the same place at the same time
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Habitat
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The place where an organism lives
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Ecosystem
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Relationship between the living community and the physical environment
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