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Botany Stems

The flashcards below were created by user jo73 on FreezingBlue Flashcards.

  1. Common functions of stems
    • Support
    • conduction
    • storage of nutrients and water
    • survival during harsh conditions
    • production of new stems
  2. Stem structure
    • 1. axil
    • 2. axillary bud
    • 3. node
    • 4. internode
  3. bud
    • undeveloped shoot containing immature apical meristem axillary bud occurs in leaf axil
    • every leaf has an axillary bud
  4. terminal bud
    • occurs at tips of stem 
    • end of branch
  5. Internal stem structure eudicot
    • Epidermis
    • vascular bundle
    • cortex and pith
  6. Monocot
    • Epidermis
    • vascular bundle
    • parenchyma
  7. secondary stems produce secondary tissues
  8. ray
    radial line of parenchyma connecting secondary xylem and secondary phloem
  9. annual ring
    amount of secondary xylem formed in one year
  10. lenticels
    • loose clusters of cells in outer bark; allow gas
    • exchange between atmosphere & stem; required b/c live stem
    • cells respire
  11. gross structure of wood
    • sapwood usually lighter color
    • heartwood often darker
  12. many plant species lack secondary meristem
Author
jo73
ID
315817
Card Set
Botany Stems
Description
adaf
Updated
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