Phloem Transport
Asked by Sudha 2007 · 2 years ago
What is the mechanism of translocation in phloem?
1 Answer
Translocation in phloem is the process of transporting food (mainly sucrose) throughout the plant. The mechanism involves:
1. Loading: Sucrose is actively loaded into the phloem at the source (usually leaves).
2. Pressure flow: This creates high osmotic pressure, drawing water into the phloem.
3. Mass flow: The resulting pressure drives the solution through the phloem tubes.
4. Unloading: At the sink (areas of growth or storage), sucrose is unloaded.
This process, unlike xylem transport, can occur in any direction as needed by the plant.
1. Loading: Sucrose is actively loaded into the phloem at the source (usually leaves).
2. Pressure flow: This creates high osmotic pressure, drawing water into the phloem.
3. Mass flow: The resulting pressure drives the solution through the phloem tubes.
4. Unloading: At the sink (areas of growth or storage), sucrose is unloaded.
This process, unlike xylem transport, can occur in any direction as needed by the plant.
NEET Faculty · 2 years ago
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