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Plants in motion

Plants in motion. Why do plants grow the way they do?. Shoots grow up above ground. Roots grow down into the ground. How do seeds know which way to grow?. 1. Watch 2. Record observations 3. What did you miss?.

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Plants in motion

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  1. Plants in motion Why do plants grow the way they do?

  2. Shoots grow up above ground. Roots grow down into the ground. How do seeds know which way to grow?

  3. 1. Watch 2. Record observations 3. What did you miss? • http://plantsinmotion.bio.indiana.edu/plantmotion/movements/tropism/phototropism/corn/cornworship.html Watch the video above

  4. Write one sentence that describes what was happening in the video. • You just defined phototropism! • A plants response to light. As a table group…

  5. Did the entire plant grow toward the light? • Shoots show a positive phototropism because _____________________________________ • Roots show a negative phototropism because _____________________________________ Shoots vs Roots

  6. If phototropism means ____________ then negative phototropism means_____________. • If phototropism means ____________ then positive phototropism means_____________. Response to light Growth away from light Response to light Growth towards light Hypothesis

  7. 1. watch 2. record observations 3. what did you miss? • http://plantsinmotion.bio.indiana.edu/plantmotion/movements/tropism/tropisms.html To what stimulus is the plant responding?

  8. Define geotropism (also known as gravitropism). • Geo – means earth Tropism – response to stimulus • Geotropism is a plants response to gravity (the earth). As a table group…

  9. If geotropism means ____________ then negative geotropism means_____________. • If geotropism means ____________ then positive geotropism means_____________. Response to gravity Growth against gravity / away from the earth Response to gravity Growth towards gravity / towards the earth Hypothesis

  10. Add Geotropism to the middle section of your foldable, and define the root words. • Open the foldable and write the definition for positive and negative geotropism. • Draw and label a picture that illustrates this tropism. Foldable

  11. What do you think will happen? Hydrotropism (roots only)

  12. Why do you think hydrotropism occurs? • How do you think it benefits the plant? • In what type of climate might you see this response more often? Why? • Why does hydrotropism affect roots only? Why?

  13. Add Hydrotropism to the bottom section of your foldable. • Open the foldable and write the definition. • Draw and label a picture that illustrates a hydrotropism. Foldable

  14. Design an experiment that would test one of the tropisms you have learned. • You must include all of the first 3 steps of the scientific method. • See grading rubric. You must score 9/12 points to be proficient. Your Assignment

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