<P> Root hair cells can survive for 2 to 3 weeks and then die off, at the same time new root hair cells are continually being formed at the tip of the root . This way, the root hair coverage stays the same . When a new root hair cell grows, it excretes a poison so that the other cells in close proximity to it are unable to grow one of these hairs . This ensures equal and efficient distribution of the actual hairs on these cells . </P> <P> The act of re-potting or transplanting a plant can result in root hair cells being pulled off, perhaps to a significant extent, and such plants may therefore wilt for some time as a result . </P>

Which feature of a root hair cell is not an adaptation for water uptake from the soil solution