TranslocationSpec 6.10
Translocation is the transport of sucrose around the plant. Sucrose is made from the glucose produced in photosynthesis, and it is carried dissolved in water in the phloem.
- Sucrose moves from the leaves, where it is made, to the parts of the plant that use it or store it, such as growing shoot tips, roots, flowers and fruits.
- It can move up and down the plant, depending on where it is needed.
- Translocation needs energy, which is released by respiration in the living cells of the phloem.
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Give two adaptations of a root hair cell.
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Any two of: a long, thin projection for a large surface area; many mitochondria for active transport; a thin cell wall.
Why is xylem made of lignified dead cells?
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Dead cells with no end walls form a continuous hollow tube for water, and lignin strengthens the walls.
What is transpiration?
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The loss of water vapour from the leaves, which pulls water through the plant.
What is translocation?
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The transport of sucrose around the plant in the phloem.