Question

A leaf peeling of Tradescantia is kept in a medium having 10% NaCl. After a few minutes, when we observe the leaf peel under the microscope, we are likely to see
A. Diffusion of NaCl into the cell
B. The exit of water from the cell.
C. The entry of water into the cell.
D. The cells bursting out

Answer 1

Hint: Osmosis is the procedure where there is the movement of solvents, takes place and this occurs through a semipermeable membrane, and this osmosis is the biological procedure that occurs in many or various process of both plants and animals.

Complete answer: The term osmosis has a different explanation in biology and chemistry, wherein biology is defined as passive transport of substances such as solvent through the semipermeable membrane, but in chemistry, they define osmosis based on the concentration of the solution.
Where there are different types of solutions, such as hypertonic, hypotonic, and isotonic, where the hypertonic solution is that concentration of solutes is more than that of solvents, and the hypotonic solution is that concentration of solvent is more than that of solute, and if the concentration of solvent and solute both are same then it is said to be the isotonic solution.
And the liquids always move from higher concentration to lower concentration, in the above question they had taken leaf peeling of Tradescantia and placed them in 10% NaCl solution.
As the concentration of NaCl solution is greater compared to the concentration of cells in the leaf peeling, so that there is passive diffusion takes place, and the water in the plant cells moves to the solution, so that it lost the water content of the protoplasm of the cell, and undergoes shrinkage of cells.
So the correct option is B.

Note: Diffusion is the process of movement of substances such as water, gases from the higher concentration to lower concentration, and this type of diffusion takes place in the biologic cells also such as diffusion of gases from the plants to the environment based on the concentration gradient.