Statement I: If blood cells are placed in pure water, they swell and burstStatement II: Due to osmosis, the movement of water molecules into the cell dilutes the salt content.

(I)   TruePurewater(Lower concentration region), Fluids in Blood cell(High concentration region)Due to Osmosis water flows from pure water to Blood cells. Thus blood cells swell & burstThis is called Haemolysis(II) trueFluids in Blood  are less concentrated than salt sol.Due to which water flows from Blood cells to salt sol.Due to which not only salt sol. gets diluted but blood cells shrink.This is called plasmolysis