why have no plants evolved to become mobile? it would be more affective to do so because they could seek out water and

Question: why have no plants evolved to become mobile? it would be more affective to do so because they could seek out water and sunlight,also theoretically they could have a 'mouth' of roots to stick into the ground to absorb nutrience as they could seek out better soil
- Keywords:
  biology,
  mobility,
  plant
Asked by maze45pen to Souvik, Sabine, Maria, John, Faye, Armin on 19 Nov 2019.
- Maria McNamara answered on 19 Nov 2019:
  
  In a way, plants are mobile. Seeds and spores produced by plants carry their genetic information and are dispersed to other environments by the wind, by water, and in the digestive systems of other animals. So plants have repeated opportunites every year to ‘move’ into other locations.

Question: why have no plants evolved to become mobile? it would be more affective to do so because they could seek out water and sunlight,also theoretically they could have a 'mouth' of roots to stick into the ground to absorb nutrience as they could seek out better soil