Botany roots shoots.txt

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Author:
kjel
ID:
70818
Filename:
Botany roots shoots.txt
Updated:
2011-03-07 20:48:31
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Botany roots shoots
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Description:
Botany, roots and shoots
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  1. Two types of roots
    Fibrous (or diffuse) and tap
  2. Drip zone
    The area of soil around a tree occupied by root tips and into which water drips from the leaf canopy.
  3. Root cap
    A protective cover over a root tip.
  4. Root hair
    A hairlike projection of a root's epidermal cell.
  5. Apical bud
    A bud at the tip of a stem
  6. Leaf primordium
    An immature leaf located at stem tip
  7. Axillary bud primordium
    An immature axillary bud.... the beginning of a potential branch
  8. Axil
    The angle between the upper surface of a leaf and the stem to which it is attached.
  9. Node
    The segment of a stem to which leaves and axillary buds are attached
  10. Internodes
    The segment of a stem between two nodes
  11. Three basic leaf arrangements
    Alternate, opposite, whorled
  12. Herbaceous
    Soft, green, and containing little woody tissue
  13. Cork
    The protective outer tissue of the bark
  14. Lenticles
    A small gas-exchange opening in the cork of a woody stem
  15. Leaf scar
    A scar left on a stem after a leaf has fallen
  16. Bud scale
    A modified leaf protecting a bud.
  17. Apical bud
    A bud at the tip of a stem. (terminal bud)
  18. Petiole
    A leaf stalk.
  19. Petiolate leaf
    A leaf in which he blade is attached to the stem by a petiole.
  20. Sessile leaf
    A leaf in which the blade is directly attached to the stem.
  21. Compound leaf
    A leaf in which the blade is divided into separate leaflets.
  22. Pinnately compound leaf
    A leaf in which the leaflets are arranged on both sides of a common axis. "featherlike"
  23. Palmately compound leaf
    A leaf in which the leaflets radiate from one point.
  24. Pinnate venation
    A vein pattern in which the major veins are arranged in rows on either side of the midrib.
  25. Palmate venation
    A vein pattern in which the major veins radiate from one point.
  26. Reticulate venation
    A netlike vein pattern in some leaves.
  27. Genera
    Groups of related species
  28. Intercalary meristem
    A meristem located between nondividing tissues such as the base of a leaf. Grass for example.
  29. Root functions
    1. Anchor plant. 2. Absorb water and nutrients. 3. Store food.

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