5. O’Keefe

8. O’Keefe

9. Monet

10. Matisse

11. Manet

12. van Gogh

13. Picasso

14. Escher

15. Salvador Dali

16. Abstract Art Extra Credit (+5 max)
Create an abstract representation of an angiosperm(s) utilizing similar techniques you have seen by some of the greats.
Due 3/14-15

17. Chapter 38 Quick Overview
Flower Anatomy
Sepals, Petals, Stamens (M), Carpels (F)
Male Female
(Stamens) (Carpels)
Filament Stigma
Anther Style
Pollen (sperm) Ovary, ovule
Receptacle
Embryo sacs

18. Pollination: (pollinating agents)
Self pollination vs. self incompatible (“self”/ “nonself”)
S-genes (fig fig. 38.5)
Sporophytic and gametophytic self-incompatibility

19. “Self-Incompatibility” prevents Self-Fertilization in some plants
Self/Non-self recognition
How is this different from humans?
If “SELF” is detected:
RNA hydrolyzing enzymes may destroy pollen
Or Stigma maybe affected

20. Germination
Plants in Motion - Corn germination

21. Fruit Types
What is the definition of a “true fruit” ?
Simple, aggregate multiple (p.738)

22. Asexual Reproduction clone of parent
vegetative reproduction, fragmentation, apomixis (unfertilized-- seed production)
Protoplast fusion p.742
What is monoculture?

23. CHAPTER 39 Control Systems in Plants
Plant Responses to Internal and External Signals

24. What is a hormone anyway?
Hormone: Greek for “to excite
- produced in a specific area
travel to another specific area (target organ)
used in minute concentrations

25. The Main Players
5 PLANT HORMONES to know … and their functions, target sites, plant conditions, examples
auxin cytokinin gibberellin ethylene abscisic acid

27. Auxin IAA (indoleacetic acid)
Location: seed embryo; meristems of apical buds and young leaves
Function: stem elongation; root growth, differentiation, branching; fruit development; apical dominance; tropisms
Auxin over time

28. Cytokinins Modified forms of adenine
Location: roots (and actively growing tissues)
Function: root growth and differentiation; cell division and growth; germination; delay senescence (aging); apical dominance (w/ auxin)

29. Gibberellins
GA3
Location: meristems of apical buds and roots, young leaves, embryo
Function: germination of seed and bud; stem elongation; leaf growth; flowering (bolting); fruit development; root growth and differentiation

30. Abscisic acid ABA Location: leaves, stems, roots, green fruit
Function:

31. Ethylene Gaseous hormone
Location: ripening fruit tissue; stem nodes; aging leaves and flowers
Function: fruit ripening; oppositional to auxin (leaf abscission); promotes/inhibits: growth/development of roots, leaves, and flowers; senescence

35. Chapter 39.2

36. Daily and Seasonal Responses
Circadian rhythm (24 hour periodicity)
Photoperiodism (phytochromes – red light sensitive)
Short-day plant: light period shorter than a critical length to flower (flower in late summer, fall, or winter; poinsettias, chrysanthemums)
Long-day plant: light period longer than a critical length to flower (flower in late spring or early summer; spinach, radish, lettuce, iris)
Day-neutral plant: unaffected by photoperiod (tomatoes, rice, dandelions)
Critical night length controls flowering
Let's see this

37. Phototropisms Cryptochromes (blue light sensitive)
Positive is growth toward light
Negative growth away from
Sunflower phototropisms
Sunflower photomorphogenesis

38. Thigmotropisms Morning Glory response Mimosa plant response
Example of turgor pressure change as well

39. Gravitropisms
Depends on starch filled vessels (amyloplasts) Orientation changes result in differential growth causing curvature.
Roots display positive
Stems display negative
Let’s see it

40. Lab 5 – Cellular Respiration in Germinating Peas
C6H12O6 + O > CO2 + H2O
Issue of O2 & CO2 Solution: KOH + CO2  K2CO3
Also PV = nRT so, if water temp and volume is constant then water will move toward lower pressure area. As oxygen is consumed during respiration, its volume is reduced. Net result is a decrease in volume within in the tube and thus a decrease in pressure in the tube (so water will continue to move in as respiration occurs)
Purpose of only rock tube? Allow detection of any changes in volume due to atmospheric pressure changes or temperature changes.