Plant Transport

Stem Tissues: An Indepth Look

Nodes: where the leaf meets the stem.

Internodes: space between the nodes.

Analogy: like your joints

Plant Transport

Stem Tissues: An Indepth Look

Stem Tissues: An Indepth Look

Xylem + cambium + phloem = vascular bundles

Stem Tissues: An Indepth Look Bark cambium: to protect the insides of a tree.

Stem Tissues: An Indepth Look

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?

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

Root Tissues: Closer Look

Root Tissues: Closer Look

Root Tissues: Closer Look

Root Tissues: Closer Look

Root Tissues: Closer Look

Root Tissues: Closer Look

Apical meristem

Root Tissues: Closer Look

Zone of Maturization

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

Root Tissues: Closer LookHow do ions get into roots?

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.

Modified Root Systems

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