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İHSAN DOĞRAMACI FOUNDATION PRIVATE BİLKENT ERZURUM LABOATORY HIGH SCHOOL

İHSAN DOĞRAMACI FOUNDATION PRIVATE BİLKENT ERZURUM LABOATORY HIGH SCHOOL. HİLAL YILDIZ 9-C. TRANSPORT SYSTEM IN PLANTS. TRANSPORT SYSTEM IN PLANT. XYLEM. PHLOEM. XYLEM TISSUE. Xylem tissue contains long xylem vessels adapted for the rapid transport of water and dissolved mineral ions.

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İHSAN DOĞRAMACI FOUNDATION PRIVATE BİLKENT ERZURUM LABOATORY HIGH SCHOOL

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  1. İHSAN DOĞRAMACI FOUNDATION PRIVATE BİLKENT ERZURUM LABOATORY HIGH SCHOOL HİLAL YILDIZ 9-C

  2. TRANSPORT SYSTEM IN PLANTS TRANSPORT SYSTEM IN PLANT XYLEM PHLOEM

  3. XYLEM TISSUE • Xylem tissue contains long xylem vessels adapted for the rapid transport of water and dissolved mineral ions. • Movement is always up the stem.

  4. LONGITUDINAL SECTION OF XYLEM VESSELS • Walls are thickened with lignin.This is waterproof and strong enough to prevent the cells collapsing inwards. • No cytoplasm or organelles, cells are dead. • End walls removed, cells join to form long tubes called xylem vessels.

  5. PHLOEM TISSUE • Phloem tissue contains sieve tubes and companion cells. • It is adapted for transport of the organic products of photosynthesis. The transport is called translocation.

  6. LONGITUDINAL SECTION OF PHLOEM SIEVE TUBES • Thin cytoplasm, cell must remain alive or sugar transport stops. • No nucleus or organelles, so sugar flow is not impeded. • Pores in sieve plates allow sugars to pass from one cell to the next. • Companion cell does not transport sugar but carries out some life process of the sieve tubes.

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