What is an embryo called after 100 cells have been produced following conception?

After conception, the developing embryo goes through several stages as it divides. Once it has reached the stage of approximately 100 cells, it is referred to as the morula. This stage occurs after several rounds of cell division following fertilization.

The morula is a solid ball of cells formed from the divisions of the zygote and signifies an early stage of development before the cells begin to specialize and organize further. From the morula stage, the embryo continues to develop into a blastula, where cells begin to form a hollow structure.

In this context, the correct designation for an embryo after 100 cells have been produced is the morula, which is critical for understanding embryonic development processes. The terminology for the other stages described, such as gastrula and zygote, occurs either earlier or later in the overall sequence, thus establishing the morula as the accurate term for this specific stage of development.