Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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

Life Sci-Ch 7 #2

Study Guide

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



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards