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19 Cards in this Set
- Front
- Back
divisions of a plant
|
root system
shoot system |
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seed structure
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no endosperm
has 2 plumule, seed coat, and epicotyl for root formation |
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seed coat
|
outermost part of seed
protection |
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cotyledon
|
3n endospore
nutrients contained within for the "embryo" |
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embryo parts and uses
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epicotyl becomes shoot system
radicle becomes the root system hypocotyl becomes stem plumule becomes leaves |
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dermal tissue divisions and uses
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dermal tissues- prevent water loss and injury
ground tissue- support and storage vascular tissue- conduction of fluid, minerals, and sugar |
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epidermis- divisions and functions
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made of trichomes and guard cells
trichomes- retard water loss guard cell-regulate gas and water exchange in leaves |
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parenchyma function
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part of ground tissue
provide structure made of a thin primary wall and live at maturity |
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collenchyma functions
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part of ground tissue
structure is unevenly thick primary cell wall alive at maturity support of young stems and leaf ribs |
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schelrenchyma
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2 types fibers and sclerids
have a primary and secondary cell wall |
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parts of vascular system
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xylem and phloem
|
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xylem structure and functions
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structure - elongated cells
-primary and secondary cell walls with pits -dead at maturity |
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phloem structure and functions
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sieve tube member
-elongated cells stacked end to end -primary cell wall with sieve plate companion cells -somewhat elongated -primary cell wall -regulate activities has a nucleus that control cells |
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meristematic tissue
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apical meristem
vascular cambium cork cambium |
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apical meristem
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cells divide continuously to give rise to other tissues at the tip of the plant
-responsible for primary growth -grows up and gives rise to leaves flowers and branches |
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vascular cambium
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gives rise to wood
cells that increase girth of tree |
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cork cambium
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also contribute to secondary growth in woody plants
|
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structure of plant tissues
|
|
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corn seed structure
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no seed coat or epicotyl
has 1 plumule and both endosperm and cotyledon |