A blastocyst is a group of cells that forms after a human egg is fertilized. The blastocyst consists of two types of cells. Some of these cells will become the
placenta. What do the other cells develop into?

A. All of the cells of a developing fetus
O
B. The skeletal and muscular systems of the fetus
a
C. The umbilical cord linking the fetus and mother
O
D. The nervous and endocrine systems of the fetus
SUBV

A. All of the cells of a developing fetus

Explanation:

As stated in the question, the blastocyst is a collection of cells formed as a result of several divisions of the ZYGOTE. This means that the zygote at some point becomes a blastocyst. The blastocyst itself is a collection of cells that make up the inner and outer layer. The outer layer is called trophectoderm, which gives rise to the trophoblast that later develops into the PLACENTA that nourishes the embryo.

The cells that make up the inner layer forms the embryo. These cells are stem cells that will eventually differentiate into all the cell types that makes up an embryo.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.