Notes for D2.3.9 Movement of water from higher to lower water potential (HL) - IB | RevisionDojo
D2.3.9 Movement of water from higher to lower water potential (HL) Notes
Water Moves from Higher to Lower Water Potential
Imagine a stream flowing downhill.
The movement is inevitable because the water has higher potential energy at the top of the hill and moves to a lower potential at the bottom.
This flow is driven by differences in potential energy and is essential for processes like nutrient transport in plants, osmoregulation, and maintaining cellular balance.
Stream flowing downhill
Why Does Water Move from Higher to Lower Water Potential?
1. Energy Minimization
Just as objects in physics move to minimize potential energy, water molecules move to achieve equilibrium by reducing energy differences.
This natural tendency ensures that water flows "downhill" on the water potential scale, from less negative to more negative values.
Unlock the rest of this chapter with aFreeaccount
Nice try, unfortunately this paywall isn't as easy to bypass as you think. Want to help devleop the site? Join the team at https://revisiondojo.com/join-us. exercitation voluptate cillum ullamco excepteur sint officia do tempor Lorem irure minim Lorem elit id voluptate reprehenderit voluptate laboris in nostrud qui non Lorem nostrud laborum culpa sit occaecat reprehenderit
Definition
Paywall
(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.
anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
Duis aute irure dolor in reprehenderit
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
Note
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.
Excepteur sint occaecat cupidatat non proident
Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit.
Tip
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.
Questions
Recap questions
1 of 5
Question 1
Recap question
A farmer applies a high concentration of fertilizer salts to soil, lowering the soil water potential. How does this change affect water uptake by plant roots?
End of article
Want a cheatsheet?
View a summary cheatsheet for D2.3 Water potential
Flashcards
Remember key concepts with flashcards
18 flashcards
What drives the movement of water in biological systems?
Lesson
Recap your knowledge with an interactive lesson
9 minute activity
Note
The movement of water from areas of higher to lower water potential is a fundamental concept in biology, particularly in plant physiology. This process is driven by differences in potential energy, similar to how water flows downhill.
Water potential is a measure of the potential energy of water in a system, and it determines the direction of water movement.
Water always moves from regions of higher (less negative) water potential to lower (more negative) water potential.
This movement is passive, meaning it doesn't require energy input, because it follows the natural tendency of systems to move toward lower energy states.
AnalogyThink of water potential like a bank account balance - water moves like money flowing from a high balance account to a low balance account until equilibrium is reached.
