AP BIOLOGY

Detailed explanation-1: -When a cell is kept in a hypotonic medium, the cells take up water from external medium and swell up. In plant cells, the cell membrane creates a pressure against the cell wall, which exerts an equal pressure against the swollen cell but do not burst.

Detailed explanation-2: -Plant cells swell up when kept in hypotonic solution because plant cells absorb large amounts of water in hypotonic solution such that the vacuole is completely filled with water and the cytoplasm presses against the cell wall. But it does not get burst due to the presence of cell wall.

Detailed explanation-3: -When a plant cell is placed in a hypotonic solution, water will flow by osmosis from the solution into the plant cell. This causes the cell to expand or swell. Since the cell wall is very rigid, it keeps the cell from bursting.

Detailed explanation-4: -A hypertonic solution has increased solute, and a net movement of water outside causing the cell to shrink. A hypotonic solution has decreased solute concentration, and a net movement of water inside the cell, causing swelling or breakage.

Detailed explanation-5: -The cell will enlarge as it absorbs water through osmosis in the hypotonic fluid.