Save
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

plants+water

QuestionAnswer
Why is water essential for life? Water is fundamental for all living organisms and ecosystem functions.
What is primary productivity, and how does it relate to water? The rate at which photosynthetic organisms create organic compounds from CO₂. It depends on water availability.
What is the formula for Water Potential (Ψ)? Ψ = Ψs (Solute Potential) + Ψp (Pressure Potential) + Ψm (Matric Potential)
What is Solute Potential (Ψs)? Water moves by osmosis in response to solute concentration.
What is Pressure Potential (Ψp)? The hydrostatic pressure that helps maintain plant cell structure.
What is Matric Potential (Ψm)? The adhesion of water to soil particles.
What is the water potential of pure water? 0 MPa (by definition).
How do stomata regulate water loss? Stomata open when guard cells are turgid and close when they are flaccid.
What percentage of Earth’s freshwater passes through stomata annually? 60-70%
What drives transpiration in plants? Low water potential in the atmosphere, pulling water up through continuous strands in the xylem.
What happens if water shortages break transpiration? It disrupts water transport, affecting nutrient uptake & cooling.
How do plants support the hydrological cycle? Through transpiration & water retention in ecosystems.
Name two ecosystems where plants regulate water balance. Saltmarshes & mangroves (buffer zones, prevent erosion).
What percentage of global freshwater use goes to agriculture? ~70%
What is the world’s tallest tree? Hyperion (115.5 m, Coast Redwood, Sequoia sempervirens).
Name another tree species with high water transport capacity. Eucalyptus amygdaloides
What percentage of global food production relies on irrigation? 50%
Why is research into salt & drought-tolerant crops important? To increase food security and adapt to climate change.
Created by: REDZ17
Popular Biology sets

 



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