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.
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

Parts of a flower

Stigma The sticky part of the pistil
Pistil or carpel The female reproductive part of the flower
sepal The small , leaflike parts of a flower.
anther The part that makes the pollen
filament It supports the anther
petal the colorful part if the flower
ovary It is a hollow structure that protects the seed as it develops.
stamen The male reproductive parts of the flower.
style A slender tube that connect the stigma to a hollow structure at the base of the flower.
tropism a plant's growth response towards or away from the stimulus
hormone it is a chemical that affects how the plant grows and develops
auxin it speeds up the rate at which a plants cells grow and controls a plant's response to light
photoperiodism it is a plants response to seasonal changes in length of night and day
critical night length it is the number of hrs of darkness that determines whether or not a plant will flower
Short - day plants it is when nights are longer than a critical length
Long - day plants its when nights are shorter than critical length
Day- neutral plants its a flowering cycle that is not sensitive to periods of light and dark
dormancy it is a period when an organism's growth or activity stops
thigmotropism touch
phototropism light
gravitropism gravity
positive tropism
negative tropism when a plant is growing a way from the stimulus
Created by: Arianna17