Which statement about a blastocyst is true?

Question

Quizplus · Accepted Answer

A blastocyst is a stage of development that occurs between the fifth and ninth days after fertilization. At this stage, the developing embryo has formed into a ball of cells with a fluid-filled cavity. It is during this time that the blastocyst burrows deep into the uterine lining, where it will eventually implant and continue to develop into a fetus. A blastocyst does not consist of a single cell, nor is it a structure that feeds the developing organism. It does not function as a membrane for regulating temperature.

Which Statement About a Blastocyst Is True