A spirogyra cell placed was placed in solution X after 1 minute the cell has been plasmolysed, solution X was 

A.

Tap water

B.

a very strong sugar solution

C.

a weak sugar solution

D.

a very weak salt solution

E.

distilled water

Correct answer is B

When a plant cell is put in highly concentrated solution, it increases the pressure on the cell. Hence, plasmolysis holds in a highly concentrated solution.