During which developmental stage do morphogenetic movements primarily take place?
Morula stage
Blastula stage
Gastrula stage
Zygote
During the Gastrula stage, which follows the Blastula stage, significant rearrangements and movements of cells occur. These movements are collectively known as morphogenetic movements. They involve cell migration, cell shape changes, and tissue rearrangements which are essential for the formation of the three primary germ layers: ectoderm, mesoderm, and endoderm.
Morphogenetic movements play a crucial role in shaping the embryo and establishing its basic body plan. They contribute to the formation of structures and organs during embryonic development. Therefore, option 3 is the correct answer.