draw neat and labelled diagram of absorption with the help of roots
Answers
Explanation:
Water is absorbed from roots
Answer:
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Explanation:
Now for the actual absorption of water by the roots—it can be shown that when a root hair is in contact with a number of cortical cells of the root and finally a trachea or a xylem vessel, water will enter the root hair, pass from there into the cortical cells and finally into the xylem if there be a gradient of water potential from the root hairs to the xylem vessels.
It is the gradient of water potential from the root hair to the xylem vessels that is essential for the absorption of water by the roots.
If the root hair A has a high osmotic pressure and is exposed to the surrounding water in the soil and the cells B to J and the xylem vessel K have progressively lower pressures, water will pass from A→K by diffusion from the soil to the roots following the same osmotic relations we have discussed so far.
