3. Keep an eye out for “The-Owl” and raise your hand as soon as you see him. –He will be hiding somewhere in the slideshow

4. Keep an eye out for “The-Owl” and raise your hand as soon as you see him. –He will be hiding somewhere in the slideshow “Hoot, Hoot” “Good Luck!”

6. Do plants have brains?

7. Answer: No

8. Class poll, plants are intelligent. Yes _______ No __________ Webster Dictionary: Intelligence: noun. The ability to learn or understand things or to deal with new or difficult situations.

9. Some questions to think about. –How does a tree know when to drop its leaves?

10. When does a plant know when to grow, and when to remain dormant?

11. How does a tree know when spring has arrived and it’s time to create buds?

12. How can a plant move from one side to another? –It doesn’t even have muscles.

13. How does a plant know when to create flowers, and what color they should be?

14. How does a plant know when the flower has been fertilized and it’s time to make seeds?

15. How does a banana know when to ripen?

16. When does a seed know it’s time to germinate?

17. –Too early, or too late could be fatal to the young plant.

18. When does a seed know it’s time to germinate? –Too early, or too late could be fatal to the young plant.

19. Does anybody know the answer…?

20. Answer: Plant Hormones.

21. New Area of Focus: Plant Hormones. New Area of Focus: Plant Hormones.

22. Plant hormones are chemicals that affect flowering;

23. Plant hormones are chemicals that affect flowering; aging;

24. Plant hormones are chemicals that affect flowering; aging; root growth;

25. Plant hormones are chemicals that affect flowering; aging; root growth; distortion,

26. Plant hormones are chemicals that affect flowering; aging; root growth; distortion, killing of leaves,

27. Plant hormones are chemicals that affect flowering; aging; root growth; distortion, killing of leaves, stems,

28. Plant hormones are chemicals that affect flowering; aging; root growth; distortion, killing of leaves, stems, and other parts;

29. Plant hormones are chemicals that affect flowering; aging; root growth; distortion, killing of leaves, stems, and other parts; prevention or promotion of stem elongation;

30. Plant hormones are chemicals that affect flowering; aging; root growth; distortion, killing of leaves, stems, and other parts; prevention or promotion of stem elongation; color enhancement of fruit;

31. Plant hormones are chemicals that affect flowering; aging; root growth; distortion, killing of leaves, stems, and other parts; prevention or promotion of stem elongation; color enhancement of fruit; prevention of leafing and/or leaf fall;

32. Plant hormones are chemicals that affect flowering; aging; root growth; distortion, killing of leaves, stems, and other parts; prevention or promotion of stem elongation; color enhancement of fruit; prevention of leafing and/or leaf fall; and many other conditions.

33. Plant hormones are chemicals that affect aspects of the plants life. Plant hormones are chemicals that affect aspects of the plants life.

34. Some plant hormones. Some plant hormones. -Auxin -Auxin -Gibberelins -Gibberelins -Cytokinins -Cytokinins -Abscisic Acid -Abscisic Acid -Ethylene -Ethylene

35. Do plants move?

36. Video Link! Plants searching for light.

37. Plants do move, although this movement is very little. (Not animal like)

38. Auxin: Promotes stem elongation and bud dormancy. Auxin: Promotes stem elongation and bud dormancy. Phototropism: When plants grow toward a light source. Phototropism: When plants grow toward a light source. Copyright © 2010 Ryan P. Murphy

39. Auxin: Promotes stem elongation and bud dormancy. Auxin: Promotes stem elongation and bud dormancy. Phototropism: When plants grow toward a light source. Phototropism: When plants grow toward a light source.

40. A plant moves by elongating the cells on the opposite side of light, causing the plant to bend toward the light.

42. Activity! Feeling phototropism in plants.

43. –Stand up tall, feet slightly apart, and bend toward the light. Copyright © 2010 Ryan P. Murphy

44. Activity! Feeling phototropism in plants. –Stand up tall, feet slightly apart, and bend toward the light. –What part of your body elongates / stretches, and which shrinks in?

45. Note: Plants do not have muscles, so the elongation and contraction occurs on a cellular level.

46. Shorted Cells

47. Note: Plants do not have muscles, so the elongation and contraction occurs on a cellular level. Elongated Cells Shorted Cells

48. Note: Plants do not have muscles, so the elongation and contraction occurs on a cellular level. Elongated Cells Shorted Cells

49. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of bending in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

50. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of bending in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

51. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of bending in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

52. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of bending in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

53. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of bending in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

54. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of bending in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

55. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of bending in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

56. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of bending in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

57. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

58. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of bending in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

59. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of bending in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

60. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of bending in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

61. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of bending in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

62. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of bending in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

63. Auxin also… –Stimulates cell division. –Stimulates differentiation of phloem and xylem –Response of bending in response to gravity and light. –Delays growth of lateral buds. –Can induce fruit setting and growth in some plants. –Delays fruit ripening. –Stimulates growth of flower parts.

64. Which plant was given extra gibberellin hormones?

66. Plant A shows extra stem elongation over plant B.

67. Gibberellins: Make stems longer. Gibberellins: Make stems longer. Copyright © 2010 Ryan P. Murphy

68. Gibberellins also… –Stimulates flowering in response to long days. –Breaks seed dormancy –Induces maleness in some flowers (sex expression). –Can cause fruit development. –Can delay dropping of leaves and citrus fruits. Copyright © 2010 Ryan P. Murphy

69. Gibberellins also… –Stimulates flowering in response to long days. –Breaks seed dormancy –Induces maleness in some flowers (sex expression). –Can cause fruit development. –Can delay dropping of leaves and citrus fruits. Copyright © 2010 Ryan P. Murphy

70. Gibberellins also… –Stimulates flowering in response to long days. –Breaks seed dormancy –Induces maleness in some flowers (sex expression). –Can cause fruit development. –Can delay dropping of leaves and citrus fruits.

71. Gibberellins also… –Stimulates flowering in response to long days. –Breaks seed dormancy –Induces maleness in some flowers (sex expression). –Can cause fruit development. –Can delay dropping of leaves and citrus fruits.

72. Gibberellins also… –Stimulates flowering in response to long days. –Breaks seed dormancy –Induces maleness in some flowers (sex expression). –Can cause fruit development. –Can delay dropping of leaves and citrus fruits.

73. Gibberellins also… –Stimulates flowering in response to long days. –Breaks seed dormancy –Induces maleness in some flowers (sex expression). –Can cause fruit development. –Can delay dropping of leaves and citrus fruits.

74. Which is Auxin and which is Gibberellins?

79. Cytokinins: Promotes cell division. They are produced in growing areas like the tips. Cytokinins: Promotes cell division. They are produced in growing areas like the tips. Root Tip

80. Abscisic Acid: Opens and closes stomata, has role in seed dormancy. Abscisic Acid: Opens and closes stomata, has role in seed dormancy.

81. Note: Stomata are small pores (openings) for gas exchange.

84. Abscisic Acid… –Inhibits shoot growth.

85. Abscisic Acid… –Inhibits shoot growth.

86. Abscisic Acid… –Inhibits shoot growth. –Induces seeds to synthesize storage proteins. –Helps to recognize and fix wounding on an injured plant.

87. What does the one bad apple do…?

89. –Why?

90. What does the one bad apple do…? –Why?

91. What does the one bad apple do…? –Why?

92. One bad apple spoils the bunch because that bad apple is releasing ethylene gas which causes the others to ripen.

94. –Remove ripe fruit from the bunch to keep fruit longer.

95. Ethelyene: A gas that promotes fruit ripening. Ethelyene: A gas that promotes fruit ripening.

96. Ethylene also… –Stimulates the release of seed dormancy. –Stimulates shoot and root growth. –Stimulates leaf and fruit abscission. –Creates femaleness in flowers. –Stimulates flower opening. –Stimulates flower and leaf dying.

97. Ethylene also… –Stimulates the release of seed dormancy. –Stimulates shoot and root growth. –Stimulates leaf and fruit abscission. –Creates femaleness in flowers. –Stimulates flower opening. –Stimulates flower and leaf dying.

98. Ethylene also… –Stimulates the release of seed dormancy. –Stimulates shoot and root growth. –Stimulates leaf and fruit abscission. –Creates femaleness in flowers. –Stimulates flower opening. –Stimulates flower and leaf dying.

99. Ethylene also… –Stimulates the release of seed dormancy. –Stimulates shoot and root growth. –Stimulates leaf and fruit abscission. –Creates femaleness in flowers. –Stimulates flower opening. –Stimulates flower and leaf dying.

100. Ethylene also… –Stimulates the release of seed dormancy. –Stimulates shoot and root growth. –Stimulates leaf and fruit abscission. –Creates femaleness in flowers. –Stimulates flower opening. –Stimulates flower and leaf dying.

101. Ethylene also… –Stimulates the release of seed dormancy. –Stimulates shoot and root growth. –Stimulates leaf and fruit abscission. –Creates femaleness in flowers. –Stimulates flower opening. –Stimulates flower and leaf dying.

102. Ethylene also… –Stimulates the release of seed dormancy. –Stimulates shoot and root growth. –Stimulates leaf and fruit abscission. –Creates femaleness in flowers. –Stimulates flower opening. –Stimulates flower and leaf dying.

103. Which one is Absic Acid and which is cytokinins?

108. Which one is the plant hormone ethylene?

114. Which is Auxin and which is Gibberellins?

119. Class poll, Are plants intelligent / more complicated, and perform exciting processes that you never thought of until studying plant hormones? Yes _______ No __________ Learn more about plant hormones (Advanced) at… http://www.plant-hormones.info/ Easier at… http://www.ext.colostate.edu/mg/gardennotes/145.html http://www.plant-hormones.info/ http://www.ext.colostate.edu/mg/gardennotes/145.html

120. Try and figure out what picture is beneath the boxes. –Raise your hand when you know. You only get one guess.