Ecosystems Flashcards
what are the biological levels of organization from simplest to most complex? (11)
cells>tissues>organs>organ systems>organisms>species>populations>communties>ecosystems>biome>biosphere
what does “species” mean?
organisms that interbreed to produce fertile offspring
what does “population” mean?
a group of organisms of the same species in a geographical area in a given time period
what does “community” mean?
multiple populations interacting in an area
what does “ecosystem” mean?
the community and the non-living components the community interacts with
what are biotic factors?
living components within an ecosystem
what are abiotic factors?
non-living components within an ecosystem
what is an ecological niche?
all of the factors required to support an organism and factors that are altered by the organism
what does “limiting factors” refer to?
conditions limiting growth, abundance. and distribution of organisms within an ecosystem
What is taxonomy?
the practice of classifying living things
what characteristics are living organisms classified by?
nutrient requirements and physical characteristics
what was Aristotle’s system of classification?
organisms classified by habitat and mode of movement
what was Linnaeus’ system of classification?
organisms classified by structural similarities
what is the modern-day system of classification?
classified by genetic similarities or differences
what are the three domains of life?
archaea, bacteria, eukarya
