The Xylem & Phloem - GCSE Biology | kayscience.com

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Transpiration occurs in the xylem. Transpiration occurs in the xylem. Transpiration is the movement of water from the roots to the leaves via the tubes called the xylem. Translocation is the movement of the sugar sucrose around the plant through tubes called the phloem.
The xylem cells are dead and hollow with no end cell walls. This adaptation allows water through the xylem at an increased rate, and therefore increases the rate of transpiration of water through the xylem. The molecule lignin strengthens the cell walls.
The phloem has living cells and pores in the sieve plates. This allows sugar to move around the plant through tubes called the phloem. The phloem transports sugar in two directions, but the xylem transports water in only one direction.
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