Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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. Your email address is only used to allow you to reset your password. See 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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Bio test

4/16/25

QuestionAnswer
Fitness the ability of an organism to survive
adaptation an inherited characteristic that improves a population to survive and reproudce
What does V.I.D.A. stand for V. variation I. Inherited traits D. Differental repoduction A. adaptation
Homologous structures Structures that have similar bone anatomy but serve different functions -shows ancestry
Vestigial structures Parts and organs inherited from ancestors that have lost their function but still persit in the organisms body
Fossils show that organisms have changed over millions of years
embryology develops similar structures in early stages of development
Gene pool all genes and alleles in a population
Genetic Drift A change in the gene pool due to luck or chance
Founder effect small group leaves a larger population and produces offspring with their trait
Directional selection One extreme is selected by natural selection. one extreme is benefical trait
Stabilizing selection Average is selcted by natural selection
Disruptive selection Both extremes are selected by natural selection
speciation creation of a new specues due to repeoductive isolation
Reproductive isolation when a group of organisms are separated and can no longer interbreed with each other
Geographic isolation when populayions are physically separated by a barrier
tempora isolation mating at different times
behavioral isolation when organisms are separated by their behavioral (song, dance)
Created by: 29rlynch
 

 



Voices

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:
Retries:
restart all cards