The general strategy in multi-cellular organisms involves different cell types performing specialized functions.

Multi-cellular organisms require more complex methods of reproduction because their carefully organized structures, such as tissues and organs, cannot be efficiently divided cell-by-cell. More intricate processes are needed to ensure the maintenance of the organism’s overall structure and function during ...

Tissues and organs contribute to the complexity of reproduction in multi-cellular organisms by requiring more sophisticated methods than simple cell-by-cell division. These structures need to be maintained in specific arrangements during reproduction.

The level of organization in multi-cellular organisms involves specialized cells forming tissues, and tissues organizing into organs, creating a structured and non-random arrangement.

Simple cell-by-cell division is impractical for many multi-cellular organisms due to their higher level of organization. These organisms have specialized cells organized into tissues, which are further organized into organs.