2. PLANT TROPISMS

3. TROPISM A Reaction in plants due to a stimulus
What are some ways plants react?

4. Positive Tropism vs Negative Tropism
Positive = Towards tropism
Negative = Away tropism
Questions ask: Is the stem positive or negative towards light? Is stem positive or negative towards gravity? Is the roots positive or negative towards light? Is the roots positive or negative towards gravity?

5. PHOTOtropism LIGHT Movement of plant towards the _______________?
The Hormone AUXIN helps it grow!

6. GEOtropism
Movement of ROOTS towards the ground due to gravity.

7. HYDROtropism
WATER
Plants grow towards ___________________

8. THIGMOtropism
TOUCH
Plant movement towards _____________.

9. Positive phototropism Negative phototropism
Leaves growing towards sunlight would be this type of tropism _____________________.
Positive geotropism
Negative geotropism
Positive phototropism
Negative phototropism

10. Positive thigmotropism Negative thigmotropism Positive Geotropism
Grapevines wrapping themselves around a fence would be this type of tropism__________.
Positive thigmotropism
Negative thigmotropism
Positive Geotropism
Negative Geotropism

11. Positive Phototropism Negative Phototropism
Growth of the leaves away from the center of Earth is called_____________?
Positive Geotropism
Negative Geotropism
Positive Phototropism
Negative Phototropism

12. Growth of the roots towards water is called:
Geotropism
Thigmotropism
Phototropism
Hydrotropism