Freshwater paramecium live in a hypotonic environment. Therefore there are spaces within the cell that expand and contract to collect and release
excess water. These spaces are structures that are known as
cytoplasm
O contractile vacuoles
cilia
oral grooves

What is genetic variation? -(a) each individual in a population has slightly different genes. -(b) some individuals in a population have more genes than others. -(c) each population of a species has slightly different genes. -(d)some populations of a species have more genes than others.