Question

Arrange the following stages of development in the correct order:

1) Morula
2) Zygote
3) Embryo
4) Blastocyst
5) Fetus

a. 1, 2, 3, 5, 4
b. 3, 1, 2, 5, 4
c. 4, 5, 2, 1, 3
d. 3, 2, 1, 4, 5
e. 2, 1, 4, 3, 5

Answer 1

The correct order of the stages of development is Zygote, Morula, Blastocyst, Embryo, Fetus.

Step-by-step explanation:

1. The correct order of the stages of development is 1) Zygote, 2) Morula, 3) Blastocyst, 4) Embryo, 5) Fetus.
2. The zygote is formed after fertilization of the egg by the sperm.
3. The morula is a solid ball of cells formed after several initial cell divisions of the zygote.
4. The blastocyst is a hollow ball of cells that forms from the morula and contains an inner cell mass and an outer cell layer.
5. The embryo develops from the blastocyst and goes through significant growth and changes until the eighth week after fertilization.
6. The fetus is the stage of development that begins after the eighth week of embryonic development and continues until birth.