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               Observation

               The root shows positive geotropism  whereas the stem shows negative geotropism.


               Inference :Roots bends towards the soil in response to gravity.



                                          Class room Activity Work Sheet 1


                  1.  (a) The shoot depicts________________ and_____________________
                  (b) The root depicts ______________ and_________________

                  2.  Name the hormone responsible for the above tropic movement. Where is the
                      above hormone made in a plant stem?

                      ……………………………………………………………………………………..

                  3.  Why does the shoot of the plant bend towards light when it is kept inside a
                      cardboard box with a small hole?

                      ……………………………………………………………………………………..
                      ……………………………………………………………………………………..

                  4.   What is a tropic movement?

                      ……………………………………………………………………………………..

                  5.  Mention two differences between tropic and nastic movement.


                   6.  How is movement of plant parts towards light advantageous to it?
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