Osmosis
Core
• Define osmosis
• Describe the importance of osmosis in the
uptake of water by plants, and its effects on
plant and animal tissues
Extended
• Describe and explain the importance of a
water potential gradient in the uptake of water
by plants
Osmosis can be define as the net movement of water molecules from an area of low water concentration to that of a higher one.
Osmosis is clearly very important to plant as, without it obtaining water would be either very difficult or impossible. Osmosis provides a medium for which water can be simply retrieved from nearby soil by root hair cells.
A water potential gradient ensures that no water is lost from root hair cells when it is being absorbed. It also makes sure that water does not simply leak out of cells,
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