Biology · Transport
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Root pressure develops due to
- A
Passive absorption
- B
Active absorption
- C
Increase in transpiration
- D
Low osmotic potential in soil
Root pressure develops due to active absorption of mineral ions by root cells. This lowers the water potential inside the roots, causing water to enter by osmosis. The inward movement of water generates a positive pressure called root pressure.
Passive absorption involves water movement driven by transpiration and does not generate root pressure.
Active absorption is the process by which roots expend energy to absorb water and nutrients, leading to the development of root pressure.
Increased transpiration does not lead to root pressure; rather, it creates a negative pressure that helps in the upward movement of water through the plant.
Low osmotic potential in soil would hinder water uptake, not contribute to root pressure.
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