AP BIOLOGY

Detailed explanation-1: -Osmosis is a special type of diffusion, namely the diffusion of water across a semipermeable membrane. Water readily crosses a membrane down its potential gradient from high to low potential (Fig. 19.3) [4]. Osmotic pressure is the force required to prevent water movement across the semipermeable membrane.

Detailed explanation-2: -Diffusion is the movement of a substance from an area of a higher amount toward a lower amount. The diffusion of water across a membrane because of a difference in concentration is called osmosis. If a cell is placed in a hypotonic solution, water will move into the cell.

Detailed explanation-3: -Osmosis is a specific type of diffusion; it is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration.

Detailed explanation-4: -Assertion :Osmosis is a special type of diffusion of water through a semi-permeable membrane. Reason: The net direction and rate of osmosis depends only on the pressure gradient.

Detailed explanation-5: -“Osmosis is a process by which the molecules of a solvent pass from a solution of low concentration to a solution of high concentration through a semi-permeable membrane.”