The graph illustrates the rate at which magnesium ions are taken up by two similar plants, X and Y. For each plant, the roots were placed in a series of solutions. Each solution had a different magnesium ion concentration. Every other condition was kept constant. What is a possible explanation for the difference in the results for the two plants?
- APlant Y has fewer protein carriers for magnesium ions in its cell membranes.
- BPlant Y has a higher rate of respiration.
- CPlant Y has more root hair cells.
- DThe root hair cells in plant Y have a lower water potential.