The correct sequence for embryonic development is
A) zygote, blastocyst, morula.
B) zygote, morula, blastocyst.
C) blastocyst, morula, zygote.
D) zygote, fetus, embryo.

Question

Quizplus · Accepted Answer

The correct sequence for embryonic development is zygote, morula, blastocyst. The zygote is formed when a sperm fertilizes an egg. The zygote then undergoes cell division to form a ball of cells called the morula. The morula then develops into a hollow ball of cells called the blastocyst. This sequence is fundamental to early embryonic development. Option A is incorrect because the correct sequence is zygote, morula, blastocyst. Option C is incorrect because the blastocyst forms after the morula. Option D is incorrect because the correct term for the early developing organism is the embryo, not fetus.

The Correct Sequence for Embryonic Development Is