question_answer 36)

  The movement of shoot towards light is (a) geotropism  (b) hydrotropism             (c) chemotropism            (d) phototropism

Answer:

                  (d) A growth movement of a plant part in response to an external stimuli, towards or away from it is called tropism. Common stimuli in environment are as given in table below Stimulus              Type of Tropism Light                      Phototropism Gravity                 Geotropism Touch                    Thigmotropism Chemical              Chemotropism