When testing tonicity in Elodea cells, once Elodea cells were placed in distilled water, what did you observe? Select all that apply. Cell membranes pressed tightly against the cell walls. Cell membranes pressed tightly against the cell walls.
Many of the cells had burst. Many of the cells had burst.
Full central vacuoles. Full central vacuoles.
Many of the cells had become crenated. Many of the cells had become crenated.