WAEC Biology 1992 Question 9

Osmosis can be defined as diffusion of

1. A.attoms and molecules thorugh a membrane to an area of higher concentration
2. B.water molecules from a dilute solution to a concentrated solution across a permeable membrane
3. C.water molecules from an area of high concentration to an area of low concentration
4. D.water molecules from a dilute solution to a concentrated solution through a semi-permeable membrane
5. E.perspiration and excretion