Active transport is necessary in the root hair cells because minerals in soil solutions cannot move into plants by osmosis or diffusion.
Dissolved minerals in soil solutions cannot move into the roots of plants by osmosis because only water molecules move by the process.
Also, the minerals cannot move by diffusion because their concentrations are usually very low in soil solutions.
Thus, the minerals need to be moved from the soil into the roots of plants against their concentration gradients. This is where active transport comes in.
More on active transports can be found here: https://brainly.com/question/2503897?referrer=searchResults
