Question

Morphogenetic movement takes place during
A. Formation of morula
B. Blastulation
C. Gastrulation
D. Organogenesis

Answer 1

Hint: Morphogenetic movement is the movement of cells to form different tissues or the organs in the organisms. It is caused by the dynamic movement of embryonic epithelial cells. In this movement, the embryonic cells get rearranged.

Complete answer:
A. Formation of morula- As soon as the fertilization occurred; the zygote undergoes the mitotic division and starts forming the daughter cells. The rapid and multiple rounds of cell division known as cleavage. The morula is formed when zygote undergoes several mitotic divisions and forms 2, 4, 8, 16 daughter cells. The embryos with 8-16 blastomeres are called the morula.
B. Blastulation is the process by which the formation of blastula from morula. The blastula contains a fluid cavity called the blastocoel.
C. Gastrulation - it is an early phase of embryonic developmental. It is a process in which gastrula is formed from the blastula. The cells in the blastula rearrange themselves to form a germ layer called ectoderm, endoderm and mesoderm. In the whole process of gastrulation, there is the formation of different layers to give shape to the embryo by the morphogenetic movement.
D. Organogenesis is a stage of embryonic development. It is starting to begin at the end of gastrulation. In this process, the different germ layers start forming the organs of the organisms.

From the above discussion, we can say that the morphogenetic movement takes place in gastrulation. Therefore the correct answer is option C.

Note: There are two types of morphogenetic movement that is, epiboly and emboly. Both of the movements take place in gastrulation. There are different types of embolic movement such as convergence, divergence, invagination, polyinvagination, involution, ingression, concrescence, infiltration, delamination, constriction and elongation or extension.