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Absorption by roots - Coggle Diagram
Absorption by roots
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characteristics of roots
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root hair have thin wall
the cell wall is thin and permeable it allows movement of water molecules to pass through it and dissolves substances freely in and out of cell
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diffusion
it is the free movement of molecules of substance from region of higher conc. to region of lower conc. when 2 are in direct contact
osmosis
it is the movement of water molecules from higher conc. to region of lower conc through a semi permeable membrane
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osmotic pressure
The pressure required to completely stop the entry of water into a solution across a semi-permeable membrane is called
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Tonicity
Hypotonic
the solution outside the cell has lower solute conc than fluids the water molecules outside move inside
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Active transport
it is the passage of substance from lower to higher conc through living cell membrane using energy from the cell
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Plasmolysis
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shrinkage or contraction of the cytoplasm (cell content) of a cell from its cell wall when placed in a hypertonic solution