Question

What are the types of osmosis?
A. Endosmosis
B. Exosmosis
C. Both A and B
D. None of these

Answer 1

Hint: A mechanism via which solvent molecules appear to migrate from a less concentrated solution into a more concentrated one through a semipermeable membrane is called osmosis.

Complete answer: Osmosis is regulated by the entry and exit of water molecules from the cell or body via a semipermeable membrane. The different types of osmosis are:
a) Endosmosis: If a cell is placed in a hypotonic solution, water flows inside a cell and swells. This movement of water is regarded within a cell as endosmosis. This happens because the solute concentration of the surrounding solution is smaller than that within the cytoplasm.
b) Exosmosis: The water passes out of the cell when a cell is introduced into a hypertonic solution, and the cell becomes flaccid. This movement of water out of the cell is usually known as exosmosis. This arises since the solvent concentration of the surrounding solution is greater than that of the cytoplasm.
Osmosis is the diffusion net migration of solvent molecules through a selectively permeable membrane into an area of higher solvent concentration in a path that appears to equalize the concentrations of the solution on both sides. Three kinds of solutions are available: isotonic solution, hypertonic solution and hypotonic solution. Isotonic involves the same concentration. One that has a higher concentration of solute outside the cell than inside is a hypertonic solution. A hypotonic solution is the one with a higher solute concentration inside the cell than outside
Hence, the correct answer is option C.

Note: Importance of osmosis involves the transfer of nutrients and release of metabolic waste products. It is responsible for the absorption of water from the soil and conducting it by xylem to the upper parts of the plant. By holding the equilibrium between water levels and intercellular fluid, it stabilizes the internal atmosphere of a living organism. It maintains the turgidity of the cells.