IB biology ecological niches

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11 Terms

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biological niches

  • the role of a species in an ecosystem

  • should be exclusive to an organism; if two try to occupy the same one, one gets outcompeted

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autotrophs

  • produce their own food using inorganic compounds

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heterotrophs

  • consummer already existing organic mass

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what is always needed for life

energy; contrust chemical complexity

sugar

fighting randomness=> requires, therefore releases energy

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obligate aerobe/anaerobe

Must be in their respective environment

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facultative anaerobe

  • can survive without oxygen, but develops faster with oxygen

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holozoic nutrition

food is

  • ingested

  • digested internally

  • absorbed and assimulated

  • egested ( shitting )`

all animals

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mixtrophics

can do everything

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all three domain

  • eukariota

  • prokariota

  • archea

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archea domain feeding

  • can do photosynthesis

  • oxidation of carbon compounds

  • oxidation of inorganic compounds

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saprotrophic

  • extracellular digestion

  • mostly in funghi, oftentimes decomposesr