Plant transport various substances like gases, minerals, water, hormone and organic solutes to short distance (one cell to another) or long distance as water from roots to tips of stem.
Simple Diffusion
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Active Transport
Comparison between Transport mechanisms-
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Chapter Notes: Transport in Plants
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ψw = ψs + ψP
ψw = ψs + ψP
Osmosis is the diffusion of water across a semi-permeable membrane. The net direction and rate of osmosis depends upon the pressure gradient and concentration gradient. Water will move from its region of higher concentration to region of lower concentration until equilibrium is reached.
Ascent of saps (Translocation of water)
The upward movement of water from roots towards the tips of stem, branches and their leaves is called ascent of sap.
Uptake and transport of mineral nutrients
Phloem transport: Flow from Source to Sink
Pressure flow or Mass flow hypothesis
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