(3) Plant Tissue and Growth

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Author:
hayesme
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16364
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(3) Plant Tissue and Growth
Updated:
2010-04-26 22:49:28
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bio
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bio 102
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  1. dermal
    covers surface of plant
  2. epidermis
    single layers of cells
  3. cuticle
    layer of wax on epidermis that prevets water loss
  4. epidermis of roots
    have no cuticle, but does have root hairs(cell extensions)
  5. vascular
    xylem and phloem
  6. 2 types of cell in xylem
    tracheids and vessel elements
  7. tracheids
    • in all vascular plants
    • fusiform shape(has pits to allow xylem sap to move from one to the next)
    • dead at functional maturity
    • supports plant ad conducts xylem sap
    • has primary and secondary cell walls
  8. vessel elements
    • found in angiosperms
    • shorter and larger
    • more efficient at tranfer of xylem sap
    • dead at functional maturity
    • not good at support
    • has primary cell wall
  9. 2 types of phloem cells
    • seive tube members
    • companion cells
  10. seive tube members are _____ at functional maturity, transports _______, has no ___________, and cant make ________
    • alive at functional maturity
    • transports phloem sap
    • no nuclei, ribosomes, or vacuole
    • cant make proteins
  11. companion cells lie along side ________, has ____________, gives ______ to __________
    • sieve tube elements
    • has plasomodesmata, nucleus, and ribosomes
    • gives protein to seive tube member
  12. ground tissue system
    • fills in space between vascular tissue and epidermis
    • where photosynthesis occurs
  13. parenchyma cells can _______ when growing, have ________ cell walls, never has ______, and always has _______
    • differentiate
    • thin primary
    • secondary wall
    • protoplasts
  14. collenchyma cells are ________ at functional maturity, have _____ cell walls, and are for the support of ____________.
    • alive
    • thick primary
    • young growing parts of plants
  15. sclerenchyma cells are ____ for the ___________, has __________ cell walls, _____ at functional maturity, and there are two types: _____ and ____.
    • support for the older parts of plants
    • has both primary and secondary cell walls
    • alive at functinal maturity
    • fibrous and scleroids
  16. herbaceous plant
    does not form wood or have secondary growth, all monocots are herbaceous
  17. indeterminant growth
    grows all their lives because of perpetually embryonic tissues(meristems)
  18. meristems
    initials
    derivatives
    • mass of embryonic cells
    • cells in the center that divide
    • cells at the edge that start to differenciate
  19. two basic types of meristems
    apical and lateral
  20. apical meristems:
    ____ plants have it
    found at _____
    responsible for ____()
    • all plants have it
    • found at tips of roots and shoots
    • primary growth (elongation)
  21. lateral meristems:
    only in ____
    responsible for ____
    increases in ____
    found in ____
    the cylanders are ____
    • woody plants
    • secondary growth
    • girth
    • woody dicots
    • meristematic tissue
  22. genetically programmed life spans
    • annuals
    • biennials
    • perennials
  23. annual
    lives 1 year
  24. biennial
    lives 2 years
  25. perennial
    lives many years (trees and shrubs)
  26. 3 root zones
    • zone of maturation/cell division
    • zone of elongation
    • zone of cell division
  27. zone of maturation/differentiation
    cells become mature and in different ways
  28. zone of elongation
    cells change shape, from cube to column
  29. zone of cell division
    apical meristem
  30. root cap
    protects the apical meristem
  31. 3 primary meristems
    • protoderm-dermal
    • procambrian-vascular
    • ground meristem-ground

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