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31 Cards in this Set

  • Front
  • Back
direction of primary growth
length of plant (height)
definition: apical meristems
meristematic tissue in tips of roots and stems
definition: meristematic tissue
undifferentiated, unspecialized tissue, like embryonic plant tissue,. gives rise to other plant tissue, continue to divide throughout the life of a plant
direction of secondary growth
growth in girth (diameter)
meristematic tissue for primary growth and secondary growth
primary growth: apical meristems
secondary growth: secondary (lateral) meristems, such as vascular cambium and cork cambium
name 3 kinds of ground tissue
1) parenchyma
2) collenchyma
3) sclerenchyma
function of parenchyma
food storage
most widely distributed tissue
parenchyma
ground tissue living at maturity
parenchyma, collenchyma, some sclerenchyma
ground tissue dead at maturity
some sclerenchyma
ground tissue with primary cell walls only
parenchyma, collenchyma
ground tissue with thick lignified (woody) secondary cell wall
sclerenchyma
primary function of collenchyma
support
primary function of sclerenchyma
support and protection
vascular tissue: types and function
specialized TRANSPORT cells arranged end to end to form tubes
includes xylem and phloem
function of xylem
conducts water and dissolved minerals
tracheid cells
type of xylem cell:
primary and secondary cell walls
also functions in support
dead at maturity
vessel member
type of xylem cell:
primary and secondary cell walls
wider than tracheid cells, so better at conducting water
dead at maturity
function of phloem
transport food, especially sucrose, from leaf and stem (where photosynthesis takes place) to the rest of the plant
sieve cells
type of phloem:
living at maturity but lacks nucleus, ribosomes and other organelles
structure connecting sieve cells
sieve plate
function of companion cell
type of phloem:
supplies sieve cells
dermal tissue
single layer of cells that serves as an outer covering of roots, stems and leaves
may have root hairs or waxy cuticles
examples: guard cells and stomata
two regions of ground tissue
1) pith (central core)
2) cortex (outer layer)
types of primary meristems produced by apical meristem
1) protoderm
2) procambium
3) ground meristem
meristem that produces epidermis
protoderm
meristem that produces primary phloem
procambium
meristem that gives rise to primary xylem
procambium
meristem that gives rise to ground tissue
ground meristem
type(s) of tissue protoderm gives rise to
epidermis
type(s) of tissue procrambium gives rise to
1) primary xylem
2) primary phloem