question_answer

  Write the technical terms for following events. (a) The movement of plant in thedirection of light. (b) The movement of plant parts inresponse to water. (c) The movement of plant parts towards chemical substance. (d) The downward movement of roots in response to gravitational force.

Answer:

  (a) The term used is phototropism it is because the movement of plant in the direction of light is called phototropism. (b) The term used is hydrotropism it is because the movement of plant parts in response to water is called hydrotropism. (c) The term used is chemotropism it is because the movement of plant parts towards chemical substance is called chemotropism. (d) The term used is geotropism the down ward movement of roots in response to gravitational force is called geotropism.