MATCHING
Match each term with its corresponding description or definition.
-the endoderm,mesoderm,and ectoderm
A)yolk sac
B)fraternal twins
C)zygote
D)histogenesis
E)amniotic cavity
F)identical twins
G)morula
H)primary germ layers
I)blastocyst
J)placenta

Question

Quizplus · Accepted Answer

The primary germ layers refer to the three layers of cells that form during embryonic development: the endoderm, mesoderm, and ectoderm.

Answer: C
 The zygote is the initial cell formed when a sperm fertilizes an egg.

Answer: G
 The morula is a ball of cells that forms in the early stages of embryonic development, before it becomes a blastocyst.

Answer: I
 The blastocyst is the stage of embryonic development that occurs about five days after fertilization, when the embryo has a fluid-filled cavity and two distinct cell types.

Answer: A
 The yolk sac is an early structure that forms during embryonic development and provides nutrients to the developing embryo.

Answer: E
 The amniotic cavity is a fluid-filled sac that forms around the developing embryo and provides a protective environment.

Answer: F
 Identical twins occur when a single fertilized egg splits into two separate embryos, resulting in two genetically identical individuals.

Answer: B
 Fraternal twins occur when two separate eggs are fertilized by two separate sperm, resulting in two genetically distinct individuals.

Answer: J
 The placenta is an organ that forms during pregnancy and provides nutrients and oxygen to the developing fetus, while also removing waste products.

MATCHING Match Each Term with Its Corresponding Description or Definition