plant transport. stem tissues: an indepth look nodes: where the leaf meets the stem. internodes:...
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Plant Transport
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Stem Tissues: An Indepth Look
Nodes: where the leaf meets the stem.
Internodes: space between the nodes.
Analogy: like your joints
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Plant Transport
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Stem Tissues: An Indepth Look
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Stem Tissues: An Indepth Look
Xylem + cambium + phloem = vascular bundles
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Stem Tissues: An Indepth Look Bark cambium: to protect the insides of a tree.
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Stem Tissues: An Indepth Look
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Questions to Ponder…
• Why would girdling, the removal of bark and vascular cambium in a narrow ring all the way around a tree, result in the death of a tree?
• If you remove the apical meristem from a dicot plant, what would be the effect on further plant growth?
• Of what value are tubers, a type of stem modification, to the survival of a plant species?
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Root Tissues: Closer LookBrainstorm: If you were to design the perfect
root system for a plant, how might it look like?--spidery for increase surface area--longer, to draw more nutrients and water,
more spread out with less competition for resources.
--sturdy to survive tough weather
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Root Tissues: Closer Look
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Root Tissues: Closer Look
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Root Tissues: Closer Look
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Root Tissues: Closer Look
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Root Tissues: Closer Look
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Root Tissues: Closer Look
Apical meristem
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Root Tissues: Closer Look
Zone of Maturization
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Root Tissues: Closer LookHow does water pass through to get into root for transport?
Symplastic Route (class exchange):
Apoplactic Route (going through hall ways):
Epidermisendodermispericycle or cambium xylem
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Root Tissues: Closer LookHow do ions get into roots?
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Root Tissues: Closer LookThe Hydrogen Pump
http://highered.mcgraw-hill.com/olc/dl/120068/bio05.swf
(1) Uses Active transport (ATP) to move the proton (hydrogen ions) from the cytoplasmTo the lysoome (or one area to another)
(2) The protein changes shape to bring H ions through: The protein is conformation A When it receives an ion. Under ATP, it turns to conformation B to release the ion to the Other side.
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Modified Root Systems
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Plants water and mineral movement
TracheidDescription: dead plant cells
Separate tubes for separate directly traveling water
More water can travel in more places
Vessel MemberDescription: dead plant cells
One huge tube for water transport