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Plant
Plant structure and Hormones
25
Biology
12th Grade
01/22/2009

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Term
Roots
Definition
-underground
-conduct H2O & nutrients
-store food
- provide sturcture and support
Term
shoots
Definition
-above ground
-photosynthesis
-reproduction and dispersal
-leaves & fruits
Term
Parenchyma
Definition
-simplest cell
-large central vacuole
-repair & replace via. differentiation
Term
Collenchyma
Definition
-thicker cell wall
-provide support for herbacious plants
Term
Schlernchyma
Definition
-thickest
-dead at maturity
-ex. shells of nuts
Term
Xylem
Definition
H2O & nutrients
-moves upward from roots
Term
Phloem
Definition
-sugar
-moves downward from shoots
Term
Dermal Tissue
Definition
-protect
-prevent H2O loss
Term
Ground Tissue
Definition
-photosynthesis
-store food
-regeneration
-support
-protect
Term
Vascular Tissue
Definition
-transports food H2O & nutrients
Term
Apical Meristems
Definition
-primary growth (upward)
Term
Lateral Meristems
Definition
-secondary growth (outward)
Term
monocots
Definition
-1 cotyledon
-parallel-vein leaves
-primary vascular bundle scattered
-pollen monosulcate
-adventitious root system
-flower in 3's
Term
dicots
Definition
-2 cotyledons
-net-veined leaves
-vascular bundle in ring
-pollen mostly tricolpate
-primary and adventitious root system
-flower in 4's or 5's
Term
Adventitious Roots
Definition
-grow in many different directions (including outward)
Term
Primary Roots
Definition
-grow simple (straight down)
Term
Parts of Leaf
Definition
-cuticle
-epidermis (lower and upper)
-guard cells
-paliside mesophyll
-phloem
-xylem
-spongy mesophyll
-bundle sheath
-stomata
Term
Parts of Pistil
Definition
-stigma
-style
-ovary
Term
Stamen
Definition
-anther
-filament
Term
Other Flower Parts
Definition
-petal
-stem
-receptacle
-sepals
Term
Zygote
Definition
-fertilized egg
Term
Cotyledon
Definition
-outside part of seed
Term
Zone of Cell Division
Definition
-3 areas just above the apical meristem that continue to divide for some time
Term
Zone of Elongation
Definition
Cells elongate up to ten times their original length
This growth pushes the root further downward into the soil
Term
Zone of Maturity
Definition
Region of the root where completely functional cells are found
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