Xylem Transport
Asked by Prathima Venkateshwaran · 1 year ago
How does water move upwards in plants against gravity?
1 Answer
Water moves upwards in plants against gravity through the xylem tissue. This process is driven by several factors:
1. Transpiration pull: As water evaporates from the leaves, it creates a tension that pulls water up from the roots.
2. Cohesion: Water molecules stick together, forming a continuous water column in the xylem.
3. Adhesion: Water molecules adhere to the walls of the xylem vessels.
4. Root pressure: Osmotic pressure in the roots pushes water upwards.
These forces work together to transport water from the roots to the leaves, even in tall trees.
1. Transpiration pull: As water evaporates from the leaves, it creates a tension that pulls water up from the roots.
2. Cohesion: Water molecules stick together, forming a continuous water column in the xylem.
3. Adhesion: Water molecules adhere to the walls of the xylem vessels.
4. Root pressure: Osmotic pressure in the roots pushes water upwards.
These forces work together to transport water from the roots to the leaves, even in tall trees.
NEET Faculty · 1 year ago
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