1. 23-5 Transport in Plants
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2. Q:What are the major forces that transport water in a plant?
A: The combination of transpiration and capillary action are the major forces that move through the xylem tissues of a plant.

3. Transpiration-water loss through leaves (celery)
Controlling Transpiration-guard cells
High transpiration rates lead to wilting(water loss)

4. Water Transport
Capillary Action-water molecules rising in thin tube; cohesion(water to water)
Adhesion-attraction unlike
molecules (water to the tube).

5. Nutrient Transport
Q: What drives the movement of fluid through phloem tissues in a plant?
A: Changes in nutrient concentration drive the movement of fluid through phloem tissue in directions that meet the nutritional needs of the plant.
Functions of Phloem: pumping sugar into fruit from leaves.

6. Movement from Source to Sink: pressure-flow hypothesis-pumping sugar to top part of the plant & then it sinks to the bottom with water.