Answer is morula.
Approximately 24 hours after fertilization the zygote, begins with the first cleavage division. Each cleavage results in more cells, it does not increase the total volume of the zygote. Each daughter cell produced by cleavage is called a blastomere. At about 96 hours a collection of around 32 cells (blastomere) called morula is formed. Because these cells arise only through the cleavage of the zygote and all are found inside the pellucid zone, which cannot expand, no growth is seen.