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When a plant cell is placed in **isotonic** solution:

ACell shrinks (plasmolysis)
BCell swells and bursts
CNo net movement of water — cell stays unchanged
DWater moves into the vacuole only
Answer & Solution
Correct answer: C. No net movement of water — cell stays unchanged
Isotonic = equal solute concentration inside and outside ⇒ no net water movement, no change in cell shape. (Plant cells, unlike animal cells, don't burst even in hypotonic solution — cell wall prevents lysis.)
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