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water potential

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Biology
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Water Potential ( (the Greek letter psi, pronounced "sigh") Plants must balance the intake of water with water loss. Osmosis is the passive movement of water across a cell membrane. There are openings between adjacent plant cell walls called plasmodesmata (which rhymes with stomata), so osmosis is not impeded by cell walls. FYI: The biopolymer/carbohydrate/polysaccharide, amylopectin (or simply "pectin") is a sticky substance that kind of glues plant cells together. You can buy this stuff in a refined form in stores. It is used to make jelly gel.

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