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Root pressure develops due to :
- Option 1)
Low osmotic potential in soil
- Option 2)
Passive absorption
- Option 3)
Increase in transpiration
- Option 4)
Active absorption
Answers (1)
As learnt
Root pressure theory -
Due to movement of water from soil into the root hair and from there to xylem cells, a hydrostatic root pressure develops which pushes the water up in the xylem vessels.
- wherein
Given by Priestly (1916), the magnitude of pressure is too small for tall trees, hence present in only herbaceous plants.
Hydrostatic root pressure develop in the plant roots by active absorption of nutrients from soil.
Option 1)
Low osmotic potential in soil
This option is incorrect
Option 2)
Passive absorption
This option is incorrect
Option 3)
Increase in transpiration
This option is incorrect
Option 4)
Active absorption
This option is correct
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