1. Plant Tropisms
Today’s Goal:
I can explain how plants respond to the environment
Warm-up: Take out botany packet and put all your books on the side of the room. Then, in your science journal
Turn to page Silently read page 118 and 119 Plant Tropism- Light and Gravity. Stop at Seasonal Responses.
Define Tropism.

2. Plant Responses to the Environment
What do you notice about all of the sunflowers in this field?

3. Plant Tropisms
Often, we don’t think of plants as being real organisms because they don’t think or move around.
Growth in response to a stimulus
Stimuli that effect plant growth:
Light (phototropism)
Gravity (gravitropism)
Water (hydrotropism)
Positive tropism  grows towards stimulus
Negative tropism  grows away from stimulus
While they may not move consciously (or very quickly) plants do respond to changes in the environment.

4. Remember, this all occurs at the cellular level!
Phototropism
Remember, this all occurs at the cellular level!
No brain required!

5. Gravitropism
Have you ever seen a tree growing out of embankment like this?
Why does this happen?

6. Thigmotropism Organisms response to contact
Remember, this all occurs at the cellular level!
No brain required!

7. Thigmotropism Organisms response to contact
Remember, this all occurs at the cellular level!
No brain required!

8. What do you think is meant by “limiting factor”?
Limiting Factors
What do you think is meant by “limiting factor”?
What gas could be considered a limiting factor for humans but NOT for plants?
Oxygen
What are the different things that plants need in order to survive…without which their growth would be limited?

9. Seed & Germination Journal
Lima Bean Seed
Pull seed coat off of seed and split the bean in half
Draw and color the seed
Label:
Seed Coat
Young Plant
Cotyledon (Food)
Pea Plant (Germinating)
Draw the germinating pea plant
Vocab Definitions:
Seed Coat (87)
Dormant (116)
Germination (116)

10. Seed & Germination Journal
Lima Bean Seed
Pull seed coat off of seed and split the bean in half
Draw and color the seed
Label:
Seed Coat
Young Plant
Cotyledon (Food)
Pea Plant (Germinating)
Draw the germinating pea plant
Vocab Definitions:
Seed Coat (87)
Dormant (116)
Germination (116)

11. TEST REVIEW
Today’s Goal:
I can explain how plants respond to the environment
Homework:
Botany Test TOMORROW STUDY!
Warm-up: Turn to reviews in your packet. Then, in your science journal
Explain the difference between vascular seed plants and vascular seedless plants.

12. Practice Quiz
1) What type of vascular tissue is responsible for transporting water and minerals from the roots to the leaves?

13. Practice Quiz
2) What do a leaf’s stomata allow to enter into a leaf?

14. Practice Quiz
3) Name an example of a seedless vascular plant:

15. Practice Quiz
4) On what part of the stamen do the pollen grains form?

16. Practice Quiz
5) On what part of the pistil must the pollen grains land in order to reach the ovules in the ovary?

17. Practice Quiz
6) What are the upper and lower cell layers of a leaf called?

18. Practice Quiz
7) What plant group includes conifers, ginkgoes, cycads and other cone-bearing plants with needles?

19. Practice Quiz
8) Which part of a flower develops into the fruit once it has been pollinated?

20. Practice Quiz 9) Photosynthesis:
1) The 2 substances required for photosynthesis are:
2) The main product of photosynthesis is:
3) The waste product is:

21. Practice Quiz
10) Label the flower diagram

22. Practice Quiz
1) What type of vascular tissue is responsible for transporting water and minerals from the roots to the leaves?
xylem

23. Practice Quiz
2) What do a leaf’s stomata allow to enter into a leaf?
CO2

24. Practice Quiz
3) Name an example of a seedless vascular plant:
fern

25. Practice Quiz
4) On what part of the stamen do the pollen grains form?
anther

26. Practice Quiz
5) On what part of the pistil must the pollen grains land in order to reach the ovules in the ovary?
stigma

27. Practice Quiz
6) What are the upper and lower cell layers of a leaf called?
epidermis

28. Practice Quiz
7) What plant group includes conifers, ginkgoes, cycads and other cone-bearing plants with needles?
gymnosperm

29. Practice Quiz
8) Which part of a flower develops into the fruit once it has been pollinated?
ovary

30. carbon dioxide (CO2 ) and water (H2O)
Practice Quiz 9)
Photosynthesis:
1) The 2 substances required for photosynthesis are:
2) The main product of photosynthesis is:
3) The waste product is:
carbon dioxide (CO2 ) and water (H2O)
glucose (C6H12O6)
oxygen (O2)

31. Practice Quiz 10) Label the flower diagram petals anther filament
sepal
ovule (egg)
ovary
style
stigma
stamen
pistil