Question

Describe adaptations in root hairs for absorbtion of water

Answer 1

$\textbf{ANSWER:}$

$<b>Semipermeable membrane of unicellular root hair permits water and mineral molecules to enter into the cell sap but does not allow them to come out.$

Ascent of sap is the upward movement of water and minerals from roots to top of plant.

★ Cell sap in root hairs has higher concentration than the surrounding soil water.

★ Large vacoule can absorb much water.

★ The root hairs provided a large surface area for absorption.