In the figure below, the line with the arrowheads indicates the cell-wall pathway for an absorbed nutrient.
What structure actually regulates the entry of nutrients into the plant's interior?

Question

In the figure below, the line with the arrowheads indicates the cell-wall pathway for an absorbed nutrient. 
What structure actually regulates the entry of nutrients into the plant's interior?

Quizplus · Accepted Answer

The plasma membrane of the endodermal wall contains selective transporters, such as aquaporins and ion channels, that regulate the entry of nutrients into the plant's interior. The other choices do not have a direct role in regulating nutrient entry. The root cap protects the root apical meristem, the plasma membrane of root hairs absorbs water and nutrients, and the cell wall of root hairs provides structural support.

In the Figure Below, the Line with the Arrowheads Indicates