Osmosis in a Potato Plant (Leaving Cert Agricultural Science): Flashcards
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Osmosis definition
Osmosis definition
Water movement through semi-permeable membrane from low to high solute conc.
Semi-permeable membrane
Semi-permeable membrane
Allows water through, blocks salt & other substances
Direction of water movement in osmosis
Direction of water movement in osmosis
From low solute conc. to high solute conc.
Turgid cells
Turgid cells
Plant cells swollen with water
Why potato used in osmosis experiment
Why potato used in osmosis experiment
Large water-filled cells, thin cell walls, firm tissue
What drives osmosis in potato experiment
What drives osmosis in potato experiment
Concentration gradient between salt in hollow & water in dish
Potato observations after 24 hours
Potato observations after 24 hours
Firmer, more swollen, liquid in cavity
Effect of salty soil on plants
Effect of salty soil on plants
Draws water OUT of roots via reverse osmosis
When does osmosis slow/stop
When does osmosis slow/stop
When equilibrium reached & concentrations balance
Role of osmosis in plants
Role of osmosis in plants
Water uptake & maintaining cell structure