Explain why when placed in distilled water a red blood cell would burst but a plant epidermis cell would not

The cytoplasm of both cells has a higher osmolarity/ lower water potential than the distilled water, this causes water to enter the cells via osmosis along the water gradient. The red blood cell is surrounded by a plasma membrane which is relatively weak and bursts with the increased pressure due to the water, whereas the plant cell also contains a cell wall. The cell wall provides more support and so the plant cell wouldn't burst but become turgid, as turgidity increases water influx decreases.

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Answered by Kelvin W. Biology tutor

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