NEET PG DENTAL EXAM

Detailed explanation-1: -The zygote travels through their fallopian tube to their uterus about three to five days after fertilization. The cell of the zygote continuously divides, eventually forming a hollow ball of cells called the blastocyst.

Detailed explanation-2: -Answer and Explanation: The embryonic stage consisting of a hollow ball of cells is called the blastula formation. The blastula of the blastomeres are hollow sphere of cells that are formed during the embryonic stage of animal development.

Detailed explanation-3: -The blastula is a hollow ball of cells organized into an epithelial monolayer. Midway through the blastula stage, the embryo secretes hatching enzyme, which results in proteolytic degradation of the fertilization envelope.

Detailed explanation-4: -A single-celled zygote will undergo multiple rounds of cleavage, or cell division, in order to produced a ball of cells, called a blastula, with a fluid-filled cavity in its center, called a blastocoel.