Which option correctly lists the sequence in which most animals develop?
A) zygote, cleavage, blastula, gastrula, organ formation
B) cleavage, zygote, gastrula, blastula, organ formation
C) zygote, cleavage, gastrula, blastula, organ formation
D) zygote, cleavage, organ formation, blastula, gastrula

Question

Quizplus · Accepted Answer

The correct sequence in which most animals develop starts with a fertilized egg called a zygote, followed by cleavage (a series of rapid cell divisions), then the formation of a blastula (a hollow ball of cells), next is the gastrula stage (where the basic layers of the embryo form), and finally organ formation begins.

Which Option Correctly Lists the Sequence in Which Most Animals