How do multicellular organisms grow in size?
increase size and number of genes
reduce size and number of cells
increase number of limbs
increase size and number of cells
Like plants, all living things have the capacity for growth. The ducklings in Figure below have a lot of growing to do to catch up in size to their mother. Multicellular organisms like ducks grow by increasing the size and number of their cells. Single-celled organisms just grow in size.