Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
share
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

Biology Yr 11

Biology Notes

QuestionAnswer
What is 'species diversity?' The number of different species and the abundance of each species in an ecosystem.
What is an ecosystem? Any area that contains a community of living things that interact with each other and their environment.
What are 'selection pressures' caused by? They are caused by combinations of abiotic and biotic factors as well as human activity.
What is the meaning of 'abundance?' The number of individuals per species in a specific area at a specific time.
What is 'biological diversity?' It refers to the variety of living things on Earth, the genes they contain and the ecosystems they live in.
What are biotic factors? The living components or biological features of an environment including animals plants and microorganisms.
What are abiotic factors? The non-living components of an environment (physical and chemical features).
What is viscosity? The thickness/stickiness of a fluid.
What is 'buoyancy?' The ability of an object to float in a medium.
What is the level of classification? Kingdom, Phylum, Class, Order, Family, Genus, Species.
What is natural selection? Natural selection is the process that decides which organisms will live and which will die.
What is divergent evolution? When more than one organism stem form the same ancestor. E.g. the Finch.
What is convergent evolution? When completely different organisms live in the same kind of environment and lead similar lifestyles, they will be subject to the same sorts of selection pressures. They may come to resemble each other. E.g. the dolphin (a mammal) and the shark (a fish).
What is 'comparative anatomy?' When different organisms share similar body structures. E.g. the arm of a vertebrate.
What is comparative embryology'?' When the embryos of various vertebrate animals are compared, they are quite similar, although they later turn into different animals.
What is relative dating? The sequential order of rock layers/strata.
What is absolute dating (also known as carbon dating)? It dates organic remains.
What is meant by the term 'half life?' The time it takes for original atoms to decay.
What is a transect? A cross-section through an area. It is used to record the type and number of species present.
Created by: T Greenfield
 

 



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