Final answer:
The term that refers only to an increase in the size of an organ or structure without indicating function is 'growth'. Growth involves the addition of cells, the increase of non-cellular material, and sometimes an increase in cell size. It is different from development, which also includes differentiation and repair.
Step-by-step explanation:
The term that refers ONLY to an increase in the size of an organ or structure, such as height or weight, and does not indicate function, is growth. Growth is the process of increasing in size that can occur by increasing the number of existing cells, increasing the amount of non-cellular material around cells, such as mineral deposits in bone, and to a limited extent increasing the size of existing cells. In contrast, development encompasses a broader range of changes the body goes through in life, including the processes of differentiation and repair, which involve cell differentiation. Maturation and differentiation on the other hand, indicate changes in the complexity and functionality of an organism or its parts during the life cycle.