3.3 Chemical Coordination in Plants

  • Do you understand that plants respond to stimuli?
  • Can you give an example of positive phototropism?
  • How do plant roots and stems respond to gravity?

A time lapse capture of snow peas growing. A plant light was placed on one side of the pot and switched about every twelve hours. The experiment was to see if the seedlings grew toward the light.

Click here to do a word search and test how fast you can find the keywords for this topic.

Screen Shot 2015-04-24 at 07.06.28

Click here to work through an animation and try a quiz on tropisms

Screen Shot 2015-04-24 at 07.06.55

Watch this video to see how you can conduct an experiment to investigate geotropism in seeds.

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