Why does an embryo undergo the process of gastrulation?
A)Gastrulation separates the cells of the inner cell mass and the trophoblast so that the trophoblast is free to develop into the placenta.
B)During gastrulation, the cells of the embryo move around to create the four extraembryonic membranes that protect the membranes.
C)The rapid cell division that occurs during gastrulation allows the embryo to increase quickly in cell number without using much energy for cell growth.
D)Cells in the blastocyst differentiate to form embryonic tissues, but are not originally located in the right place. Gastrulation moves these cells to the proper position in the embryo.

Question

Quizplus · Accepted Answer

Gastrulation is the process that rearranges cells within the blastocyst to form the three germ layers, which give rise to all the tissues and organs in the body. During this process, cells move to their proper positions in the embryo, allowing for proper differentiation and formation of tissues and organs. Thus, option D is the correct choice.

Why Does an Embryo Undergo the Process of Gastrulation