Hypo means deficient.hyper means too much.hypotonic lowers the concentration of the cell.hypertonic highers the concentration of the cell.hypotonic  will cause fluid to move into the cell.hypertonic cause the water to be pulled from the cell, This is the cells’ attempt to equalize osmotic pressure.hypertonic esults in the cell’s attempt to equalize osmotic pressure. The cell will crenate — shrink.
Hypotonic Solution: the cell has a higher concentration in it than in the area surrounding it. Water moves into the cell to equal out concentration.
Hypertonic Solution: Concentration of the cell is less than outside of the cell. Water moves out of the cell to try to even out the concentration.