Question

How is cell volume related to bulk flow of water in plants and animals

Answer 1

cell volume in both plant and animal cells, are related ato the bulk flow of water that is the movement of water containing dissolved solutes, across one or more layers of cells.

In humans, for example, water moves from the blood filtrate that will form urine across a layer of epithelial cells lining the kidney tubules and into the blood, thus concentrating the urine. If this did not happen, one would excrete several liters of urine a day.  Immersion of all animal cells in a hypertonic solution causes them to shrink as water leaves them by osmotic flow. In hypotonic solution animals cells will burst as water enter inside cells.Consequently, it is essential that animal cells be maintained in an isotonic medium, which has a solute concentration close to that of the cell cytosol

In higher plants, water and minerals are absorbed by the roots and move up the plant through conducting tubes ,the xylem. water is lost from the plant mainly by evaporation from the leaves. osmosis is the  processes that have common among all those. Osmosos is the movement of water from a region of lower solute concentration to a region of higher solute concentration.