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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

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.

Remove ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

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

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


what is gravitropism? a plant's growth response to gravity
what is phototropism? a plants growth response to light
what is hydrotropism? a change in a plants' direction of growth due to water
what is thigomotropism? a plants' growth response to light
what is night length? it's an external stimulus signal for many plants to start reproducing
in what wet and dry seasons' place do trees lose their leaves before dry season? tropical climates
what does chlorophyll do in autumn? it starts to break down, allowing other colors to be seen
what is tropism? a plant's response to an external stimulus
what kind of g.tropism do roots have? positive
what kind of g.tropism do stems have? negative
Created by: starscream