In which of the following organisms, injury to one cell can lead to the death of the organism?
Paramecium
Paramoecium is a unicellular organism, i.e., it is made up of a single cell. The single cell performs all the essential life processes by itself. Therefore, any injury to this cell can be fatal and even lead to death. Horse, mushroom and snail are multicellular organisms. Any injury to one cell of these organisms would not lead to any significant disruption in essential life processes.