1. BELL WORK (Buff Binder): Copy the question below and write your entire answer:
Gametes produced by flowers are used to carry out what function?
Transportation
Photosynthesis
Gravitropism
Reproduction

2. Quiz retake
Before The test on Friday

3. TELPAS
Describe the parts and processes involved in a plant’s response, reproductive, and transport systems, and explain how all three systems work together to help a plant maintain homeostasis.
Describe the parts and processes involved in a plant’s response, reproductive, and transport systems, and explain how all three systems work together in the life cycle of a plant

4. Set up today’s page… YES, Cornell notes! Page: 70 Date: 2-22-15
Title: Plant Transport
Essential Question: How do the support and transport systems help plants maintain homeostasis?
YES, Cornell notes!

5. Today we’re going to look at how plants maintain homeostasis.

6. STRUCTURE & SUPPORT

7. Roots: Hold plant in position Absorb water and minerals from the soil
Contain specialized cells for water intake

8. (Wheat seed) Root hairs
Fragile parts of cells that grow from the main root
They massively increase the surface area for absorption

9. Root hair cells (x150)

11. Stems:
Support structures
connect and carry water & nutrients between roots and leaves

12. TRANSPORT SYSTEM

13. Vascular tissue: specialized tissues used to move water and nutrients throughout a plant

14. Xylem: cells that carry water up from the roots Phloem: cells that transport food (from photosynthesis) down from the leaves

15. Read your notes, highlight important words!
2 minutes
End

16. What about leaves?

17. Leaves: organs that perform photosynthesis and contain vascular tissue

18. Cuticle: a thick waxy layer that protects against injury and water loss

19. GAS EXCHANGE
Leaves are designed to allow carbon dioxide to get to the main chlorophyll layer at the top of the leaf
They have small holes called stomata on the under surface
Each hole is open & closed by 2 guard cells

20. Stoma: an opening on the underside of a leaf that allows carbon dioxide and oxygen to diffuse (move) into and out of the leaf Stomata= plural form Guard cells: specialized cells that control the opening and closing of stomata
Color your picture!

21. Each opening is controlled by two guard cells.
closed
open

22. gas exchange in the leaf
oxygen
Guard cell
Carbon dioxide

23. Transports water and sugar to stem and roots
Conserves water
Photosynthesis
Transports water and sugar to stem and roots
Structures of the Leaf

24. Why do stomata open and close?

25. Gas exchange

26. OPEN = when carbon dioxide is needed for photosynthesis
Stomata open and close at different times of the day
OPEN = when carbon dioxide is needed for photosynthesis
CLOSED = to conserve water

27. Transpiration: the loss of water through leaves (specifically the stoma)

28. Read your notes, highlight important words!
2 minutes
End

29. Transpiration Video

30. Debrief/Summary: Explain how a plant might respond to each of the following situations…
drought (not enough water)
flood (too much water)
extra carbon dioxide in the air due to some crazy person singing to their plants
not enough carbon dioxide in the air