Question

why is endosmosis only found in animals

Answer 1

the concentration of the cell SAP is more than the concentration of the outside

Answer 2

endosmosis is only found in animal cells because animal cells have a flexible cell membrane but in case of plants in addition to cell membrane the plant has a cell wall which is less flexible and hence does not allow the inflow of much amount of water in it....whereas the animal cell is unable to obstruct the inflow due to flexible and less rigid cell membrane..
Hope this helps...