A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. ... Animal cells simply have a cell membrane, but no cell wall.
Answer:
seven categories of classification
Explanation:
back in linneaus time there was only five categories. Class, order, genius, species, and variety.
Immunity gained through immunization and exposure to diseases