Question

Differentiate between exosmosis and endosmosis.

Answer 1

Exosmosis :

1. Exosmosis refers to the osmosis toward the outside of a cell or vessel.
2. It occurs when the water potential of the cell surrounding is lesser than that inside the cells.

Endosmosis :

1. Endosmosis is the osmosis toward the inside of a cell or vessel.
2. It occurs when the water potential of the cell surrounding is higher than inside the cells.

Exosmosis	Endosmosis
1. Water moves out of the cell during exosmosis.	1. Endosmosis refers to the osmosis toward the inside of a cell or vessel.
2. Exosmosis occurs when the solute concentration of the surroundings is higher than the solute concentration inside the cell.	2. Endosmosis occurs when the solute concentration of the surroundings is less than the solute concentration inside the cell.
3. The cells shrink as a result of exosmosis.	3. The cells may swell as a result of endosmosis.
4. Exosmosis occurs when cells are placed in hypertonic solutions.	4. Endosmosis occurs when cells are placed in hypotonic solutions.
5. The movement of water from the root hair cells to the cortical cells of the root is an example of exosmosis.	5.The absorption of capillary water from the soil by roots and the entrance of water into xylem are the examples of endosmosis.