Semipermeable I hope that helped
When placed into an hypertonic solution, animal cells will shrivel up, while plant cells will stay firm thanks to their air-filled vacuole. In a hypotonic solution, the cells will take on water and appear more plump. In an isotonic solution, they'll stay the same.
It is a perfect example of a natural selection.
(I'm not sure if this is the exact answer that you are looking for.)
it is D on my point of veiw..
