Topic 9.1 Transport in the Xylem of Plants

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Across
  1. 1. Openings in the lateral walls of xylem cells allowing water and nutrients to leak into surrounding tissues (4)
  2. 5. Water-conducting and supportive elementS of xylem composed of long, thin cells with tapered ends and walls hardened with lignin (9)
  3. 6. Plant that have adaptations that allow them to grow in waters of high salinity (9)
  4. 9. Apparatus used to measure water uptake in a leafy shoot and so to estimate rate of transpiration (9)
  5. 11. A hard, impermeable complex polymer embedded in the cellulose matrix of vascular plant cell walls that functions as an important adaptation for support in terrestrial species (6)
  6. 12. Pores in the epidermis (principally lower) of a leaf that allows the exchange of gases with the outside air. (7)
  7. 15. The innermost layer of the cortex in plant roots; a cylinder one cell thick that forms the boundary between the cortex and the stele (10)
  8. 16. _________ tissue Plant tissue consisting of cells joined into tubes that transport water and mineral ions (xylem) and organic nutrients (phloem) throughout the plant. (8)
  9. 17. Nonliving vascular tissue that carries water and dissolved minerals from the roots of a plant to its leaves (5)
  10. 18. ___________ mesophyll Layer of tall, column-shaped mesophyll cells just under the upper epidermis of a leaf (8)
  11. 21. A waxy covering on the surface of stems and leaves that acts as an adaptation to prevent desiccation in terrestrial plants (7)
  12. 22. Individual dead cells which are joined end to end to make up xylem vessels. (8)
Down
  1. 2. Large air space adjacent to stomate from which water is lost from the plant leaf. (3-8, 6)
  2. 3. narrow threads of cytoplasm that pass through the cell walls of adjacent plant cells and allow communication between them (14)
  3. 4. Attraction between molecules of the same substance - e.g. water molecules in the xylem (8)
  4. 7. Tiny, hair-like extensions of root epidermal cells that increase the surface area of the root allowing it to absorb water and mineral nutrients (4, 5)
  5. 8. The single vascular bundle at the centre of a plant root (5)
  6. 10. A thin, transparent layer of cells located near the upper and lower surfaces of the leaf of terrestrial plants- adaptation to prevent water loss. (9)
  7. 13. ____________ mesophyll Photosynthetic tissue consisting of loosely packed, irregularly shaped cells with air spaces around them located below the palisade mesophyll (6)
  8. 14. Plant with adaptations that enable them to survive in dry (xeric) habitats or habitats where water is in short supply in the environment (9)
  9. 19. An attraction between molecules of different substances, in effect between water cellulose of plant cell walls (8)
  10. 20. Dead, hollow, elongated tubes, with lignified side walls and no end walls, main way that water is transported in the xylem in higher plants. Made up of elements (7)