Flashcards
Evolution and classification vocab
Cards in this deck (21)
- 1EvolutionThe change in a species as a whole over time
- 2Natural Selection"Survival of the fittest" organisms that are best suited for survival are the ones that successfully reproduce and pass on their beneficial characteristics; leads to evolution
- 3Charles DarwinThe man who voyaged to the Galapagos and developed the idea of natural selection, which contributes to evolution
- 4SpeciationThe emergence of a new species due to natural selection
- 5Co-EvolutionOccurs when two or more populations evolve at the same time
- 6Divergent EvolutionOccurs when two species evolve to be more different over time
- 7Convergent EvolutionOccurs when two species develop similar traits for similar functions (fish, dolphin, penguin)
- 8Homologous StructuresStructures that originate form the same type of tissue but may be used differently in different organisms
- 9Vestigial StructureA structure that may have once had a function in a species but has evolved to be useless over time (appendix, whale's hip bone)
- 10StreptococcusGenus of bacteria; commonly known for causing strep throat
- 11VirusNon-living pathogen that causes many harmful conditions; (vaccines protect against them, but once you've caught it, it is in your body forever) Examples: common cold, flu, AIDS, small pox
- 12Active ImmunityAn organism's defense against invading pathogens due to production of antibodies (ex:vaccine)
- 13Passive ImmunityAn organisms defense against invading pathogens due to the transfer of antibodies (ex: baby receiving breast milk)
- 14Binomial NomenclatureThe system of naming organisms based on their scientific genus and species
- 15ClassificationSystem of placing organisms in groups based on similarities. Domain, kingdom, Phylum, Class, Order, Family, Genus, Species
- 16Dichotomous KeyA multi-step tool used to identify a species based on physical characteristics it may possess
- 17CladogramA diagram beginning with an out group organism, shows relationships based on shared derived traits
- 18Phylogenetic TreeA diagram beginning with a common ancestor; shows evolutionary history of a species
- 19BacteriaProkaryotic, single-celled organisms, often aid in decomposition and digestion or cause harmful infections
- 20ProtistEukaryotic organism (often single-celled); classified as plant-like, animal-like or fungus like
- 21Earth's HistoryPaleozoic Era: 540 million years ago- invertebrates, fish, reptiles
Mesozoic Era: 245 million years ago- dinosaurs, mammals
Cenozoic Era: 66 million years ago- placental orgs humans
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- Flashcards on Evolution and classification vocab, created by alexiss0510 on 12/12/2013.
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