Question
d) Explain how a root hair cell is specialised for its function. __
Answer
4.2
(190 Votes)
Leonie
Veteran · Tutor for 11 years
Answer
A root hair cell is specialized for its function in several ways:- It has a large surface area for water absorption.- It is position on the plant root allows it to directly absorb nutrients from the environment.- It contains a thin cell membrane that allows for easy absorption of materials.- Acidic protons are pumped into the soil which allows certain nutrients to diffuse back into the cell through the concentration gradient.
Explanation
A root hair cell is indeed specialized for its function in various ways. Firstly, the primary functionality of a root hair cell is to engage in the absorption of water and nutrients, both notably vital for the plant's survival. This feature illustrates the basic foundation of a highly optimized cell system intentionally fostered through evolutionary dynamics. Specifically, the cell contains a large expansive surface area encouraged by its elongated shape. This satisfies greater levels of interaction with the moisture area, hence supporting deeper water absorption. Secondly, the position of the root hair cell at the plant's exterior plays a central role in reducing the distance for absorbed materials to reach the plant. The cell moreover comprises a thin membrane escalating the ease with which essential materials can be internalized. Finally, it secretes proton pumps that pump hydrogen ions (H+) from the root hair cells into the soil. Adhering to the concentration gradient, nutrients such as nitrate ions then diffuse back into the root hairs.