A cell in isotonic, hypotonic and hypertonic solutionsसमपरासारी, अल्पपरासारी व अतिपरासारी विलयन में कोशिका

NCERT Fig 2.6 · interactive diagram

Parts and their functions

• Isotonic solution (समपरासारी विलयन) — Solute concentration outside = inside. Water moves in and out equally — the cell stays the same.
• Hypotonic solution (अल्पपरासारी विलयन) — Outside is more dilute (e.g. plain water). Water enters by osmosis — the cell swells (potato in Beaker A).
• Hypertonic solution (अतिपरासारी विलयन) — Outside is more concentrated (e.g. 20% salt). Water leaves — the cell shrinks (potato in Beaker B).
• Osmosis (परासरण) — Movement of water through a selectively permeable membrane from a dilute to a concentrated solution. Salt/sugar cannot pass.

Original diagram drawn by Simple Learning Hub, based on NCERT Fig 2.6. Report a mistake