Definition of Water Potential?

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Hi I'm doing WJEC BY1 AS level biology exam tomorrow and I was wondering if anyone had a good definition of Water Potential? Please help! Thanks and good luck to everyone who's got exams this week :)

Posted: 08-01-13 15:14 by Hannah

I am on the aqa exam board, but I'm sure the definition will be pretty much the same.

Water potential is the tendency of water to move from one area to another. A high water potential has more water molecules and less solute molecules. A low water potential has more solute molecules and less water molecules. Water always moves from a high to low water potential.

This website explains it well. 

Good luck.

Posted: 08-01-13 16:06 by Tilly - Team GR