Multiple Choice Questions (MCQs)
Chorion is derived from ________ cells.
discoidal meroblastic cleavage occur in ________.
During mammalian cleavage the trophoblast cells secrete fluid into the morula to create a blastocoels this process called as ________.
The cells adjacent to the chordamesoderm, the paraxial ________ cells, are the presursors of the mesodermal somites.
The original type of trophoblast cells constitute a layer called the ________.
The first segregation in mammalian cells within the inner cell mass results in the formation of the ________.
In Nematode cleavage is ________.
The lateral lips of the blastopore comprise those cells that will become ________.
In Tunicate cleavage during the next three divisions, differences in cell size and shape highlight the ________ of these embryos.
Mother provides the fetus with nutrients and oxygen, and the fetus sends its waste products ________ into the maternal circulation.
A ________ is a cell derived from cleavage in an early embryo.
The ________ that are the precursors of the neutral tube invaginate into the embryo and are enclosed by neural folds.
The cytotrophoblast initially adheres to the ________ through a series of adhesion molecules.
The cells adjacent to the chorda-mesoderm, the paraxial mesoderm cells, are the presursors of the in ________ fish.
In mammalian cleavage at 64-cell stage, the inner cell mass and the ________ cells have become separate cell layers, neither contributing cells to the other group.
The peripheral ring of blastodem cells that have not shed their deep cells constitutes the ________.
The narrow connecting stalk of extra-embryonic ________ that links the embryo to the trophoblast eventually forms the vessels of the umbilical cord.
In Tunicate the second Cleavage ________.
Between the area pellucida and the area opaca is a thin layer of cells called the ________.
Fishes, ________, and birds undergo discoidal meroblastic cleavage, wherein the early cell division do not cut through the yolk of the egg.
Tunicate gastrulation is characterized by the invagination of the endoderm, the involution of the mesoderm, and the epiboly of the ________.
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