1. 3/26  Get out:  Plant Book  Reminder: Test Corrections before/after school

2. 3/27  Get out plant book  Open to chapter 23 for notes  Reminder – test corrections need to be completed by next Tuesday!  If you missed test come see me

3. Flowering plants Cone-bearing plants Ferns and their relatives Mosses and their relatives Green algae ancestor Flowers; Seeds Enclosed in Fruit Seeds Water-Conducting (Vascular)Tissue EVOLUTIONARY RELATIONSHIPS OF PLANTS Bryophytes Gymnosperms Ferns Angiosperms Where did plants come from? Why are they so different? How have they changed over time?

4. CHAPTER 23: PLANT STRUCTURES What are the 3 main organs and their functions: 1. Roots- absorb water and nutrients 2. Leaves – site of photosynthesis & gas exchange (O 2 and CO 2 ) 3. Stems- support; connect root + leaves; carry H 2 O + nutrients

5. PLANT TISSUES 1. Dermal: outer covering of plant  cuticle: thick waxy covering, conserves H 2 0  root hairs: small cells on roots, increase surface area for water absorption

6. PLANT TISSUES 2. Vascular: transport system used to move water and nutrients throughout the plant.  xylem: transports water  phloem: transports nutrients and products of photosynthesis

7. PLANT TISSUES 3. Ground: composed of cells that lie between the dermal and vascular tissue.

8. Used for: 1) Absorption of minerals and water from the soil. 2) Storage of starches (vegetables) 3) Anchor to ground 4) 2 main types of roots: taproot—grow long and deep to reach water below the surface. Ex. Carrots, radishes Structures : ROOTS

9. STRUCTURES: ROOTS  fibrous—branched root system that grows close to the surface helps prevent soil from being washed away by rain. *Plants can have taproots, fibrous roots or both*  Apical Meristem: area of root where cell division and growth occurs.

10. Function: produce leaves, branches, and flowers; used for support and transport of substances between leaves and roots. Structures: STEMS: Note: Wood = layers of xylem found in the stem. The tree rings show years of growth or “tree age”. Bark = composed of several layers including phloem.

12. 3/31  Get out plant book  Reminder – Plant Book Quiz tomorrow  Come to enrichment if you aren’t finished  If you still need to make up the test come see me now!

13. Structures: Leaves Function: Absorb light and carry out photosynthesis Special structures Stomata—opening in leaf to allow exchange of O 2, CO 2 and water vapor Guard cell —regulates opening of the stomata and respond to conditions in the environment (wind, temperature) to maintain homeostasis within leaf.

14. PHOTOSYNTHESIS Equation: CO 2 + H 2 O C 6 H 12 O 6 + O 2  Xylem: transports water needed for reaction to occur.  Phloem: transports glucose from leaves to roots for storage.  Stomata & Guard Cells: regulates the amount of gases & H 2 O needed for photosynthesis to occur.  Leaf: contains chloroplasts, chlorophyll, + enzymes needed for photosynthesis Light Energy PLEASE MAKE ADJUSTMENT IN PLANT BOOK FORMAT

15. TRANSPIRATION 2)Transpiration loss of water through stomata When water is abundant, it flows from roots to leaves and guard cells respond by opening stomata to release excess water When water is scarce, guard cells respond by closing stomata to limit transpiration High transpiration rates can lead to wilting. http://youtu.be/mc9gUm1mMzc

16. MONOCOT VS. DICOT  Monocot: 1 seed leaf; parallel veins; flower multiples of 3, Fibrous roots  Dicot: 2 seed leaves; branched veins; flower multiples of 4 or 5, tap root

17. 4/1  Get out Plant Book for Quiz (not a joke)  Reminder – Test next Monday  If you did not bring your station lab to me for a stamp, do so now!  If you missed a lab:  Fern and moss  Plant dissection  Come see me

18. ADD TO NOTES: TURGOR PRESSURE  Turgor Pressure: Pressure exerted on the sides of the plant cell wall due to an expanded vacuole.  What are some conditions which could cause Turgor Pressure to decrease, thus causing a plant to wilt?

19. Plant System Interactions: -Products of Photosynthesis -Uptake of water by the root system Transport -Hormones used for pollination, fruit ripening, flower development Reproduction -Phototropism -Thigmotropism -Gravitropism Plant Responses VASCULAR TISSUE: XYLEM & PHLOEM What do the transport, reproductive, and plant response systems of plants have in common?

20. 4/4  Pick up:  Whiteboard  OLC worksheet  Get out  Pen or pencil  Cell phone (not a trick)