Bellwork:Label the parts of the flower.

1 2

3

4

5

6

7

Plant Notecards4th and 5th Periods

Due Friday (3/9/15)

1. Anther2. Cellular

Respiration3. Filament4. Flower5. Germination6. Glucose7. Gravitropism8. Hydrotropism9. Leaf10. Ovary11. Petal

12. Phloem13. Photosynthesis14. Phototropism15. Pistil16. Pollen17. Pollination18. Roots19. Sepal20. Stamen21. Stem22. Stigma23. Stoma

24. Style25. Thigmotropism26. Transpiration27. Xylem

Plant Transport Notes in your I.A.N. Page 63

Transport SystemEssential Question: How does a

plant use the transport system to maintain homeostasis?

Remember: Plant Parts/Systems

• Reproductive System = Flower (with male and female parts)

• Transport System = tissues in stem

• Nutrient System = Leaf + Root

• Structural Support System = Stem + Roots

All of these parts and systems work together to help a plant maintain homeostasis.

What is the structural support system made of?

Roots

• Hold plant in position• Absorb water

and minerals from the soil• Specialized cells

to increase surface area for water intake

Wheat seed

Root hairs

Fragile parts of cells that grow from the main root

They massively increase the surface area for absorption

Stems:

- are supporting structures that

connect and carry water and

nutrients between the roots and

leaves

What is the transport system made of?

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

Xylem: carries water upward from the roots to every part of the plant.

Phloem: transports food (nutrients)

produced by photosynthesis.

How are the parts of a leaf related to their function?

Leaves are organs that perform photosynthesis and contain one or more bundles of vascular tissue.

Cuticle: a thick waxy layer on the top of the leaf that protects the leaf against water loss and injury.

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

Stomata: openings in the underside of the leaf that allow carbon dioxide and oxygen to

diffuse (move) into and out of the leaf.

Guard cells: specialized cells in the epidermis

that control the opening and closing of stomata.

Stoma is a small holeIts size is controlled by 2 guard cells

closed open

Stoma function is for gas exchange in the leaf

Carbon dioxide

oxygenGuard cell

Provided plant is photosynthesising

Why would a plant open and close its stomata?

Transpiration is the loss of water through leaves.

Osmotic pressure keeps a plant’s leaves and stems rigid.

Wilting results from the lack of

water—and therefore of the

pressure in a plant’s cells.

Mix-Freeze-Group

2 43• I am the vascular tissue that transports nutrients through

the plant.• I am the structure around the stomata that allows gases

to enter and exit the leaf.• I am the process during which water is lost through the

leaves.• I am the vascular tissue that transports water throughout

the plant.

5Phloem XylemGuard Cell Transpiration

Celery DEMONSTRATION!