Botany: inside stems

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kjel
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70792
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Botany: inside stems
Updated:
2011-03-05 01:21:35
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botany stems
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Botany: inside stems
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  1. tissue
    a group of cells of the same type having a common function
  2. xylem
    a water conducting tissue in plants
  3. phloem
    the food conducting tissue of plants
  4. molecule
    a chemically bonded group of atoms
  5. organ
    a part of a plant, composed of different tissues, that acts as a functional unit
  6. organism
    a living plant or animal
  7. epidermis
    the outer layer of cells on an herbaceous cell
  8. cuticle
    a waxy layer on the outside of leaves, herbaceous stems and fruits
  9. glaucous
    smooth and having a waxy bloom
  10. pubescent
    having short hairs
  11. epidermal hair
    a filament of cells arising from an epidermal cell
  12. cortex
    the region in roots and stems immediately inside the epidermis
  13. cutin
    the waxy substance forming a cuticle layer
  14. pith
    a region of parenchyma cells at the center of a stem
  15. vascular plant
    any plant containing water- and food-conducting tissues
  16. vascular bundle
    a strand of conducting tissue containing xylem and phloem
  17. primary growth
    growth arising from cellular activities on apical meristems
  18. primary tissue
    a tissue formed during primary growth
  19. primary phloem
    food-conducting tissue formed by growth activities originating in apical meristems
  20. primary xylem
    water-conducting tissue formed by growth activities originating in apical meristems
  21. secondary phloem
    food-conducting tissue formed by the vascular cambium
  22. secondary xylem
    water-conducting tissue formed by the vascular cambium
  23. vascular cambium
    a narrow cylinder of cells that gives rise to secondary xylem and phloem; a lateral meristem
  24. cork cambium
    a layer of cells in the bark giving rise to the cork; a lateral meristem
  25. cork
    the protective, outer tissue of the bark
  26. wood
    the dense tissue composed of secondary xylem in stems and roots
  27. suberin
    a fatty plant substance present in the walls of cork cells; waterproofing
  28. scion
    a plant part inserted into a root stock during grafting
  29. stock
    a rooted plant into which a scion is inserted during grafting
  30. sapwood
    the outer, light colored, water-conducting region of secondary xylem
  31. heartwood
    the central, dark colored portion of secondary xylem in a tree trunk
  32. vascular ray
    a narrow sheet of cells running radially across the secondary vascular tissues of a stem or root
  33. annual ring
    a cylinder of secondary xylem added to the wood in a single growing season
  34. springwood
    xylem laid down by the vascular cambium in spring and early summer; also called earlywood
  35. summerwood
    xylem laid down by the vascular cambium in late summer; also called latewood
  36. fiber
    a long, thick-walled cell that dies at maturity
  37. amylase
    an enzyme that breaks down starch
  38. lignin
    wood
  39. pilose
    long soft hair
  40. hirscute
    hairy (long beard)
  41. rugose
    rough hair

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