Which of the following terms refers to an outer layer of cells that develops during the germinal period and later provides nutrition and support for the embryo?
A)Ectoderm
B)Endoderm
C)Blastocyst
D)Trophoblast

Question

Quizplus · Accepted Answer

The term that refers to an outer layer of cells that develops during the germinal period and later provides nutrition and support for the embryo is trophoblast. The other answer choices, ectoderm and endoderm, refer to germ layers that develop later during embryonic development, while blastocyst refers to the stage of development in which the embryo is a hollow ball of cells before implantation.

Which of the Following Terms Refers to an Outer Layer