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5th Grade Ch. 4 Lesson 4 How do Plants Grow
 

5th Grade Ch. 4 Lesson 4 How do Plants Grow

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    5th Grade Ch. 4 Lesson 4 How do Plants Grow 5th Grade Ch. 4 Lesson 4 How do Plants Grow Presentation Transcript

    • Ch. 4 Lesson 4 How do plants grow?
    •  
    • “ mile a minute plant” -can grow up to 1 foot per day
    • tropisms
      • ways that plants change their direction of growth in response to environment
    • gravi tropism
      • roots grow downward b/c of gravity
    • photo tropism
      • plant’s reaction to light
      • stem grows toward light
    • thigmo tropism
      • plant’s growth in response to touch ing an object
    • growth hormone
      • chemical that affects plant growth
      • can make cells grow larger
      • cells may also look larger b/c vacuoles fill w/ water
    • gravitropism Name that tropism!
    • Name that tropism! phototropism
    • Name that tropism! phototropism
    • Name that tropism! phototropism & gravitropism
    • Name that tropism! thigmotropism
    • Tropisms in our neighborhood Plant name Location Type of tropism Sketch or describe tropism