A scientist conducts an experiment by soaking the roots of a plant in a solution which contains mineral salts at different levels of oxygen concentrations. Explain why the mineral salts concentration in the roots increased when the oxygen concentration in the solution increases by 10%.
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The following list summarises how the root hair is adapted to absorb water from the soil:
There are many, elongated root hairs to increase the total root surface area for water absorption.
They have thin walls to speed up the intake of water by osmosis.
They have large vacuoles to absorb water quickly and transport it to the next cells.
The vacuoles have salts, which speed up water absorption from soil water.
Root hairs do not have cuticles, as this would prevent water absorption.
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