Solution:
The movement or the growth of a plant in relation to the stimulus of water is called hydrotropism. Plant roots show a positive hydrotropic response, as they move and grow towards the water.
Hence, the correct option is water or moisture.
Which of the following factors can stimulate root growth in plants?
The movement or the growth of a plant in relation to the stimulus of water is called hydrotropism. Plant roots show a positive hydrotropic response, as they move and grow towards the water.
Hence, the correct option is water or moisture.