NEET BIOLOGY

Detailed explanation-1: -Movement of water into a cell is called as endosmosis and movement of water out from a cell is called as exosmosis. So, a cell placed in strong salt solution will shrink because water comes out by exosmosis.

Detailed explanation-2: -When plant cells are put in really salty water, water diffuses/moves out of the cell and the central vacuole shrinks. When animal cells are put in salty water, water diffuses/moves out of the cell and the cell shrivels up.

Detailed explanation-3: -If we place a cell in the hypertonic solution like in sugar or salt solution, the cell will shrink. It is because the movement of water takes place from lower solute concentration to higher solute concentration i.e from inside sugar solution to attain equilibrium. It results in shrinkage of the cell.

Detailed explanation-4: -When a cell is placed in concentrated salt water (hypertonic solution), it is seen that cell has more water content than the salt solution. As a result, the water will move from its higher concentration to lower concentration without any expense of energy (passively).

Detailed explanation-5: -Similarly, if there is a higher concentration of dissolved salt outside of the cell (a hypertonic environment), then H20 will diffuse “out” from the cell and the cell will dehydrate and shrink and cellular metabolism will cease.