Question

what would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time?
it would shrivel and shrink.
it would swell but never burst.
it would swell and then burst.
it would not be affected.

Explanation:

In a hypotonic solution, the solute concentration outside the unicellular organism is lower than inside. Water will move into the cell by osmosis. Without a strong cell - wall to prevent excessive expansion, the cell will swell and eventually burst.

Answer:

It would swell and then burst.