1. Plant Hormones and Responses

2. Hormone – chemical that affects the way an organism functions
produced in one part of plant and transported to use in another part

3. Hormone – chemical that affects the way an organism functions
produced in one part of plant and transported to use in another part
Target Cells – the cells that a hormone affects to get a response

4. Parts of the plant most susceptible to hormones
____________– part of the plant that is still actively growing (shoot and root)
___________ – shoots or branches off to the side of the main stem
_______ – Ripened ovary of an angiosperm

5. Parts of the plant most susceptible to hormones
Apical Meristem – part of the plant that is still actively growing (shoot and root)
_________– shoots or branches off to the side of the main stem
________ – Ripened ovary of an angiosperm

6. Parts of the plant most susceptible to hormones
Apical Meristem – part of the plant that is still actively growing (shoot and root)
Lateral Buds – shoots or branches off to the side of the main stem
_______ – Ripened ovary of an angiosperm

7. Parts of the plant most susceptible to hormones
Apical Meristem – part of the plant that is still actively growing (shoot and root)
Lateral Buds – shoots or branches off to the side of the main stem
Fruit – Ripened ovary of an angiosperm

8. Plant Hormones Auxin Elongates cells for stem growth
Produced by apical meristem
Triggers phototropism

9. Plant Hormones Auxin Cytokinins Elongates cells for stem growth
Produced by apical meristem
Triggers phototropism
Cytokinins
Promotes cells division and growth

10. Plant Hormones Auxin Cytokinins Gibberellins
Elongates cells for stem growth
Produced by apical meristem
Triggers phototropism
Cytokinins
Promotes cells division and growth
Gibberellins
Causes seed germination (ends dormancy)

11. Plant Hormones Auxin Cytokinins Gibberellins
Elongates cells for stem growth
Produced by apical meristem
Triggers phototropism
Cytokinins
Promotes cells division and growth
Gibberellins
Causes seed germination (ends dormancy)
Abscisic Acid (Inhibitors)
Prevents water loss by closing stomata
Causes fruit dormancy
Causes leaf fall

12. Plant Hormones Auxin Cytokinins Gibberellins
Elongates cells for stem growth
Produced by apical meristem
Triggers phototropism
Cytokinins
Promotes cells division and growth
Gibberellins
Causes seed germination (ends dormancy)
Abscisic Acid (Inhibitors)
Prevents water loss by closing stomata
Causes fruit dormancy
Causes leaf fall
Ethylene (Gas)
Causes fruit to ripen
Causes leaves to age

13. Tropism and Nastic Movement
______ – growth of a plant or part of a plant in response to a stimulus
________ – grows towards stimulus
_______ – grows away from stimulus
______________– movement of a plant in response to a stimulus

14. Tropism and Nastic Movement
Tropism – growth of a plant or part of a plant in response to a stimulus
________ – grows towards stimulus
_______ – grows away from stimulus
____________– movement of a plant in response to a stimulus

15. Tropism and Nastic Movement
Tropism – growth of a plant or part of a plant in response to a stimulus
Positive – grows towards stimulus
_______ – grows away from stimulus
_____________– movement of a plant in response to a stimulus

16. Tropism and Nastic Movement
Tropism – growth of a plant or part of a plant in response to a stimulus
Positive – grows towards stimulus
Negative – grows away from stimulus
_____________– movement of a plant in response to a stimulus

17. Tropism and Nastic Movement
Tropism – growth of a plant or part of a plant in response to a stimulus
Positive – grows towards stimulus
Negative – grows away from stimulus
Nastic Movement – movement of a plant in response to a stimulus

18. Plant Responses ____________ – plants respond to light grow towards it
_________________ – plants respond to gravity and grow against it (roots down, shoots up)
______________ – plants respond to touch and grow towards those structures in contact
______________ – plants respond to water and grow towards it

19. Plant Responses Phototropism – plants respond to light grow towards it
_______________ – plants respond to gravity and grow against it (roots down, shoots up)
___________ – plants respond to touch and grow towards those structures in contact
__________ – plants respond to water and grow towards it

20. Plant Responses Phototropism – plants respond to light grow towards it
Geotropism/Gravitropism – plants respond to gravity and grow against it (roots down, shoots up)
___________ – plants respond to touch and grow towards those structures in contact
___________ – plants respond to water and grow towards it

21. Plant Responses Phototropism – plants respond to light grow towards it
Geotropism/Gravitropism – plants respond to gravity and grow against it (roots down, shoots up)
Thigmotropism – plants respond to touch and grow towards those structures in contact
_____________ – plants respond to water and grow towards it

22. Plant Responses Phototropism – plants respond to light grow towards it
Geotropism/Gravitropism – plants respond to gravity and grow against it (roots down, shoots up)
Thigmotropism – plants respond to touch and grow towards those structures in contact
Hydrotropism – plants respond to water and grow towards it

23. What type of tropism is this?

24. What type of tropism is this?

25. What type of tropism is this?

26. What type of tropism is this?

27. What type of tropism is this?

28. What type of tropism is this?

29. What type of tropism is this?

30. What type of tropism is this?

31. What type of tropism is this?

32. What type of tropism is this?

33. What type of tropism is this?

34. http://plantsinmotion. bio. indiana