What is a hypotonic solution ? Learn about hypotonic solution examples, hypertonic vs. hypotonic solution and how tonicity works. Also learn about... A hypotonic solution is a solution that has a lower solute concentration compared to another solution . A solution cannot be hypotonic , isotonic or hypertonic without a solution for comparison. Identify what a hypotonic solution is and what happens to plant and animal cells in hypotonic solutions . Review examples of hypotonic solutions and their uses. A hypotonic solution has a lower concentration of solute than another solution , meaning water will flow out of it. An isotonic solution has the same or very similar concentration of solute as another solution , meaning the water flow will reach equilibrium. Hypertonic, hypotonic , and isotonic are three words that are commonly used in science.