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Transportation in Plants (Xylem (Structure: (walls are made of lignin,…
Transportation in Plants
Xylem
Structure:
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- Xylem stretches from roots to leaves
- consists of vessels which contains pits
Function:
- mechanical support to the plant
- transportation of water and minerals from roots to other parts
Adaptations:
- has hollow lumen walls for easy flow of water
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- dead structure with no protoplasm
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Phloem
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Functions:
- transports food from leaves to rest parts of the plants
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Transpiration Terms:
Transpiration Pull: a process which enables transpiration in plants by water loss from the leaves and creating a suction creating a pull and enabling water to move from roots to the leaves
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Wilting:
Advantages:
- Reduction of transpiration rate
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Disadvantages:
- photosynthesis rate reduction
water starts acting as a limiting factor - closed stomata reducing the level of CO2 to enter the leaf
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