When a freshly collected Spirogyra,filament is kept in a 10% potassium nitrate solution,it is observed that the protoplasm shrinksin size:
What is this pehnomenon called?

When a freshly collected Spirogyra,filament is kept in a 10% potassium nitrate solution,it is observed that the protoplasm shrinksin size: What will happen if the filament is replaced in distilled water?