1. Good Afternoon! Water Flow Activity:
Take paper towel and your celery cup.
Observe leaves of celery in dyed water vs. control (plain water).
Slice thin cross section of the celery and observe under hand lens.

2. What are we doing today? Activity: Water Flow in Celery
Recap: Water & Solute Transport in Plants
The Most Amazing Thing About Trees...
Lecture: Xylem & Phloem
Next Class:
Reading Quiz
Logbook Check-in!
Bring log book to class
Have photos on phone, or them to

3. What did we talk about last class?

4. 25.3 – Clarify osmosis and how water moves across membranes

5. 25.3 – Clarify osmosis and how water moves across membranes

6. 25.3 – Clarify osmosis and how ions moves across membranes

7. 25.3 – How does water move from the soil to the xylem?

8. 25.3 – How does water move from the soil to the xylem?

9. 25.3 – How does water move from the soil to the xylem?

10. The Most Amazing Thing About Trees...
379.1 feet
Hyperion (greek mythology)
Mystery location – somewhere in California Redwood National Park

11. The Most Amazing Thing About Trees...
How is it possible for water be transported to the tallest part of a tree?

12. 25.3 – Transpiration-Cohesion-Tension

13. 25.3 – Transpiration-Cohesion-Tension

14. 25.3 – Regulating water loss and gas exchange

15. 25.4 – Transport of carbohydrates in the phloem

16. 25.4 – Pressure Flow Model

17. Xylem vs. Phloem Comparison Chart
Function
Driving Force of Transport Mechanism
Movement
unidirectional
bidirectional
Nature of Tissue
Driving Pressure
negative
positive

18. Reminders NEXT CLASS: Reading Quiz 26.1-2
Logbook Check-in (logbook, data, photos)
PROJECT:
Final Paper Exemplar (online)
Logbook & Final Paper DUE TUESDAY
Presentation (Video) DUE THURSDAY