AP BIOLOGY

Detailed explanation-1: -“Salt essentially draws the water out of their skin – an osmosis effect – and they die within minutes of dehydration, ” says Dr Gordon Port, senior lecturer at Newcastle University.

Detailed explanation-2: -You can consider osmosis to be a special case of diffusion in which diffusion occurs across a semipermeable membrane and only the water or other solvent moves. Diffusion and osmosis are both passive transport processes that act to equalize the concentration of a solution.

Detailed explanation-3: -The salt on the outside of the slug causes the water from the inside of the cells to move out. The dehydration of the slug causes death. The pouring of salt on the slug will cause the outer surface of the slug to have a higher concentration of solute as the salt will mix with the mucus of the slug.

Detailed explanation-4: -When raisins are soaked in water, they swell. All this is due to the process of osmosis. The water molecules pass the cell membrane of the raisins and the raisins thus get swollen.