Plant Biology stems test

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task1214
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47719
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Plant Biology stems test
Updated:
2010-11-06 17:03:00
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Stems continued
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things on the test about stems
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  1. What are the three regions on the stem?
    Node Internode Axil
  2. What is a node?
    where leaf and stem meet
  3. Where is the internode?
    region between nodes
  4. where is the axil?
    angle between petiole and stem
  5. What are the three buds?
    axillary (lateral) buds, Terminal (apical)buds, Bud scales
  6. where are the axillary or lateral buds located?
    in the axils of leaves; on side of stem
  7. where is the terminal bud?
    at the tip of the stem
  8. what are bud scales?
    they cover and protect buds
  9. what are the four scar tissue on the stems?
    bud scale scars, stipule scars, leaf scars, and bundle scars
  10. on a branch how can you tell how old it is?
    by counting the number of bud scales on the branch
  11. stipule scars are found how?
    a stipules is a paired leaf-like structure found at the base of the leaf.
  12. What is left after a leaf falls?
    leaf scars
  13. what three things are there about bundle scars?
    1)found within the leaf scars 2) they mark where the vascular bundles were 3) the number or arrangement can be used to identify trees in the winter
  14. What four things about apical meristems?
    1.found in terminal and axillary buds,2. surrounded by leaf primordia,3. often protected by bud scars in dormant seasons, 4..found in plant embryo
  15. what three things about primary meristems?
    1. prodermis 2. procambium 3. ground meristems
  16. what is pith?
    center of the stem, made of parenchchyma cells
  17. What root have piths and do all roots have pith?
    1. dicots and no they do not
  18. what is cortex in the stem?
    tissue between the epidermis and the vacular tissue
  19. what and where is cortex in the roots?
    tissue composed mailiy of parenchyma, located between epidermis and endodermis
  20. secondary tissue ?
    produced by the vascular cambium a.xylem and phloem and produced by the cork cambium a periderm
  21. what is herbaceous (Non-Woody) Dicotyledonous Stems?
    annuals, mostly primary tissue, and vascular bundles in discrete patches
  22. what are rhizomes stems?
    horizontal stems underground, adventitious roots, iris, ferns, and grasses
  23. What are runners/stolons stems?
    • runners are horizontal stems grow along the soil surface (like strawberry)
    • stolons grow on top of the ground
  24. What are tubers stems?
    proof that it is a stem = "eyes" are leaf scars with axillary buds, like irish potato,,swollen stems
  25. what are bulbs stems?
    stem with flesh leaves and adventitious roots at the base/ i.e. hyacinths, lilies, tulips, and onions
  26. what are corms stems?
    fleshy stem with papery scale-like leaves like crocus, and gladiolus
  27. what is cladophylls stems?
    flattened stems with leaf-like apperance (butchers broom) like asparagus the feathery 'leaves' are cladophylls
  28. What are all other stems?
    1. cacti(needles =leaves) 2. spines=modified leaves or stipules 3.tendrils=modified leaves
  29. what does wood=?
    secondary xylem tissue
  30. what are the three annual rings in order from xylem?
    earlywood, latewood, and climate

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