How does water rise in tall trees?
Answers
Answer:
Water rise to tall trees by suction pull during day it is low but during night time it is fast. during night time transpiration is fast and transpiration create a pressure also called transpirational pull which cause root water to move at leaves. But during day transpiration is low then it is not possible for the water transport by suction pull hence water transport by the process of diffusion.
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Answer:
Transpiration is the process which causes movement of water and minerals from roots through xylem up to the top of a tall tree.
Transpiration mainly takes place through stomata in the leaves. The loss of water from the intercellular space of leaves tissue cause a drop in turgor pressure of cells. These cells in turn take water from xylem tissue. The xylem tubes act as single continuous column. When leaf tissues take water from xylem column there is drop in pressure at that point. Evaporation of water molecules from the cells of a leaf creates a suction pressure which pulls water from the xylem cells of roots. This leads to an uptake of water from the soil through roots.
The whole sequence occurs as shown below: