AP BIOLOGY

ANIMAL REPRODUCTION AND DEVELOPMENT

EMBRYONIC DEVELOPMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The middle layer of the blastocyst is the
A
endoderm
B
ectoderm
C
mesoderm
D
deuterostome
Explanation: 

Detailed explanation-1: -The mesoderm is the middle layer of the three germ layers that develops during gastrulation in the very early development of the embryo of most animals. The outer layer is the ectoderm, and the inner layer is the endoderm . Tissues derived from mesoderm.

Detailed explanation-2: -mesoderm, the middle of the three germ layers, or masses of cells (lying between the ectoderm and endoderm), which appears early in the development of an animal embryo.

Detailed explanation-3: -Endoderm is the innermost of the three primary germ layers in the very early embryo. The other two layers are the ectoderm (outside layer) and mesoderm (middle layer). Cells migrating inward along the archenteron form the inner layer of the gastrula, which develops into the endoderm.

Detailed explanation-4: -The mesoderm is one of the three primary germ layers in the embryo. It forms midline structures such as the notochord, somites, and neural tube. The mederm that’s lateral to the notochordal process has three components, which give rise to different embryonic structures.

There is 1 question to complete.