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Biology 20: Chapter 3 Questions And Answers
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Biology 20: Chapter 3 Questions And Answers Dichotomous key Identification key that uses a series of paired comparisons to sort organisms into smaller and smaller groups Ecosystem A community of populations, together with abiotic factors that surround and affect it Taxonmy Practice of clas...

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  • November 12, 2024
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  • 2024/2025
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Biology 20: Chapter 3 Questions And
Answers

Dichotomous key Identification key that uses a series of paired comparisons to sort

organisms into smaller and smaller groups




Ecosystem A community of populations, together with abiotic factors that surround and

affect it




Taxonmy Practice of classifying organisms based on common fundamental characteristics




Kingdom Second highest classification level (under Domain), there are 6 __________




Domains Highest level of classification of living things; the three ______ are Bacteria,

Archaea, and Eukarya




Archaea Single celled organisms that are capable of living extreme conditions


Ex. Salt Lakes or hot springs




Bacteria Micro-organisms, are very diverse and can exist in a wide variety of habitats

, Biology 20: Chapter 3 Questions And
Answers

Protista Autotrophs or heterotrophs invest their food (multicellular)


Ex. Algae




Sessile Do not move




Fungi Obtain food by secreting digestive enzymes onto their food and then absorbing the

molecules that are released by the enzmes (multicellular)

Ex. Mushroom




Plantae Organisms that photosynthesis and are multicellular




Animalia Are the most motile and ingest their food (multicellular)




Binomial Nomenclature A system in which a two word name is used to identify an

organism (genius, species)

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