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Life Sci-Ch 7 #2

Study Guide

QuestionAnswer
Evolution is…. ability of organism or population to change slowly over time.
A species can…. mate and produce fertile offspring
Adaptation is…. a characteristic that helps an organism survive and reproduce (happens over a short time)
Fossils….. remains or imprints organisms preserved in layers of rock
Fossil record timeline of life provided by remains of dead organisms
Sediment/sedimentary rock where fossils are likely to be found
Father of evolution is…. Charles Darwin
Types of bird Darwin examined and compared. Finches
What characteristic did Darwin compare with the finches? the shapes of their beaks
What was limited in his theory on evolution/natural selection because he didn't know about... genetics/differences in genes create variation
A trait is…. an inherited characteristic
Natural selection….. lets individuals with the better traits survive and reproduce more successfully
Four parts of natural selection overproduction - inherited variation - struggle to survive - successful reproduction
When spider produces hundreds of eggs and only few survive; this is... over production
When organism's offspring are not identical - that is... inherited variation
Groups of individuals of same species living in same place... population
Populations are limited by... starvation, disease, competition and predation
Why do insects adapt quickly to insecticides? there generation time is short
When two isolated groups become isolated and start adapting to new environment - this begins speciation
Parts of speciation separation - adaptation - division
When speciation does occur - what is a result The two groups cannot interbreed anymore
If a farmer want to produce vegetables that will grow in a specific climate... selective breeding
If two organisms have similar traits and DNA…. probably share a common ancestor
ESSAY/SHORT ANSWER QUESTIONS Explain process of fossil formation
Explain differences between adaptation and evolution (could use info from study guide)
Give one example of a local farm using selective breeding for some type of livestock he raises. (Cows, chickens, pigs, etc). What trait(s) do they want the animal to have.
Created by: msparks