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Xylem and phloem
Describe the roles of xylem and phloem: (a) xylem is responsible for transporting water and mineral ions, as well as providing structural support, (b) phloem is responsible for transporting sucrose and amino acids.
3
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30
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21
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90 min
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CambridgeIGCSEBiologyTransport in plants
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Xylem and phloem outcomes3 objectives
- Describe the roles of xylem and phloem: (a) xylem is responsible for transporting water and mineral ions, as well as providing structural support, (b) phloem is responsible for transporting sucrose and amino acids.
- Locate xylem and phloem in diagrams and images of cross-sections from the roots, stems, and leaves of non-woody dicot plants.
- Connect the structure of xylem vessels to their functions, focusing on: (a) the presence of thick lignified walls (details of lignification are not necessary), (b) the absence of cell contents, and (c) the arrangement of cells end to end without cross walls to create a continuous tube.
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