Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Natural Selection
Darwin - Evolution - Natural Selection
| Question | Answer |
|---|---|
| a structure or behavior that helps an organism survive | adaptation |
| a change in a species over time | evolution |
| the process by which evolution occurs; organisms with more favorable variations survive to reproduce | natural selection |
| the islands that Darwin visited helping him shape his ideas on evolution | Galapagos |
| differences in a strucutre or behavior within a population | variations |
| fighting over limited resources, either within a population or between populations of different species | competition |
| the scientist that first published the accepted theory of evolution | Charles Darwin |
| the ship that Darwin sailed on in the 1830's | HMS Beagle |
| the title and date of Darwin's book | On the Origin of Species, 1859 |
| a group of similar organisms that can interbreed and produce fertile offspring | species |
| preserved plant and animal remains | fossil |
| body parts in different organisms that are similar in structure and probably were passed on by a common ancestor | homologous structure |
| body parts that are present in an organism, but no longer have a function or purpose | vestigial structure |
| the place where an organisms' needs are met | habitat |
| an example of homologous structures in mammals | bat wings, whale fins and cat paws |
| an example of vestigial structurs in humans | appendix, tails and ear muscles |
| the four needs of an organism that are met by its habitat | food, water, shelter and a place to raise young |
| separation of populations of the same species by geography or events (river, ocean, mountain, volcano..) | isolation |
| types of evidence that scientists use to determine evolutionary history | fossils, DNA, similarities in development and body structures |
| How do new species form? | From adapting to conditions differently after separation through isolation and/or continental drift |
| A branching tree diagram showing evolutionary relationships | cladogram |
Created by:
doakes27