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?
(a) Plasmolysis
(b) This will cause more water to enter into the cells, and the cells will swell and return to their natural shape and size.