Question

Assertion (A): When plant cells are kept in a hypertonic solution, the protoplast of the cell shrinks.

Reason (R): In plant cells kept in a hypertonic cell promote exosmosis due to which water of cytoplasm (including vacuoles) comes out through plasma membrane.

Options

• Both A and R are true and R is correct explanation of the assertion.

• Both A and R are true but R is not the correct explanation of the assertion.

• A is true but R is false.

• A is false but R is true.

Answer 1

Both A and R are true and R is correct explanation of the assertion.

Explanation:

Water moves out of the plant cell by exosmosis in a hypertonic solution, making the protoplast shrink away from the cell wall (plasmolysis).