Assertion : Plasmolysis will be severe if the process is in the order, limiting `to` incipient `to` evident.
Reason:Plasmolysis is exosmosis.

Options

A. Both the Assertion and Reason are true and Reason is the correct explanation of the Assertion.
B. Both Assertion and Reason are true, but Reason is not the correct explanation of assertion
C. Assertion is true, but Reason is false
D. Assertion is false, but Reason is true

Answer

B

Explanation

Shrinkage of the protoplast of a cell from its cell wall under the influence of a hypertonic, solution is called plasmolysis. Hypertonic solution causes exosmosis or withdrawl of water from the central vacuole of the cell.
The pressure on the wall is simultaneously reduced and the elastic wall contracts causing a reduction in cell size.
The first stage of plasmolysis is called limiting plasmolysis. Initially, the protoplast withdraw's itself from the corners. This stage is known as incipient plasmolysis.
Due to continued exosmosis, protoplast shrinks further and withdraws from the cell wall except at one or a few points. It is known as evident plasmolysis. Cells cannot survive in such cases.