If a cell shrinks when placed in a solution,this solution is

When a cell is plasmolysed,it becomes

The intake of water into cells is known as:

When a grape is placed in a concentrated sugar solution,it will show:

When a freshly collected $Spirogyra$ filament is kept in a $10\%$ potassium nitrate solution,it is observed that the protoplasm shrinks in size.
$(a)$ What is this phenomenon called?
$(b)$ What will happen if the filament is replaced in distilled water?

The cell given in the diagram below shows a shrunken protoplasm. Which one of the following is an $INCORRECT$ statement regarding this cell?