Which of the Following is a Morula

Question

Which of the following is a morula?
A) a fertilized egg
B) the group of cells that form the archenteron
C) a tightly packed ball of early embryonic cells
D) a hollow sphere of cells

Accepted Answer

A morula is a stage of early embryonic development, consisting of a ball of cells that has divided multiple times after fertilization. It is typically a tightly packed ball of around 16-32 cells, before it becomes a blastula with a fluid-filled cavity. Options A, B, and D do not fit this description.