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science words walker

science words

TermDefinition
species a group of organisms that share similar traits and can reproduce fertile offspring
competition a struggle between individuals and species for resources such as food living space mates and other resources
natural selection any variation that makes an organism better suited to its envoronment
evolution a change in a species over time
Darwin the naturalist who proposed the theory of evolution by natural selection
variation an inherited trait that makes an individual different from other members of its species
population all of the individuals of a species living in the same area
adaptation the mechanism of evolution where organisms with the traits best suited to the environment survive and reproduce
mutations permanent changes in an organisms genes
Lamarck the scientist who proposed the theory of acquired characteristics
homologous structures body parts of similar orgin and structure
geographic isolation when a new species is formed by a seperation of a mountain
vestigial structures body parts with no function
radioactive dating using radioactive elements to find the age of a fossil
embryology the study of developing organisms
relative dating using rock layers to find age of a fossil
gene pool all genes in a population that are available for reproduction
fossils remains of prehistoric organisms
fossil record evidence of organisms that have lived through out time
dna evidence evidence for evolution
linneaus swedish naturalist who developed the biological classification system
archaebacteria found in hot springs and salt ponds kingom of the domain called archaea
plantae includes bryophyta pterophyta and coniferophyta
kingdom 2nd largest group in biological classification
eubacteria causes salmonella and streptococcus
domain largest group in the biological classification system
aristotal developed the first classification system
fungi includes mushrooms and yeast
dichotomus key tool used to identify unknowen organisms
archaea includes the archaebacteria kingdom
animalia includes mammals
eukarya has all the main living organisms like animals and plants
phylum 3rd largest group in the biological classification system
protista includes protist
bacteria has the eubacteria kingdoom
field guide used to identify different animals and plants
divisions smaller groups in which plantae is divided in to
Created by: 8003360
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