When a jelly fish is removed from its salt water environment and put into fresh water it swells and bursts (Why does it swell and burst?). Do you think a jelly fish is a plant or an animal? Why?
It swells & bursts because its salt content of its intracellular fluid. This draws in water from the fresh water outside by osmosis (nature so to speak ...
This solution provides a brief, but concise response of about 110 words which discusses concepts related to osmosis.