Multiple Choice
If fertilization does not occur, what will happen to the oocyte in a typical human menstrual cycle?
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11. Cell Division
Introduction to Cell Division
Multiple Choice
Which of the following is the inner germ layer formed during embryonic development?
A
Ectoderm
B
Mesoderm
C
Endoderm
D
Periderm
Verified step by step guidance1
Understand the concept of germ layers: During embryonic development, three primary germ layers are formed—ectoderm, mesoderm, and endoderm. These layers give rise to all tissues and organs in the body.
Identify the inner germ layer: The endoderm is the innermost germ layer, while the ectoderm is the outermost layer, and the mesoderm lies in between.
Learn the role of the endoderm: The endoderm develops into the lining of the digestive tract, respiratory system, and other internal structures such as the liver and pancreas.
Differentiate the other options: The ectoderm forms structures like the skin and nervous system, while the mesoderm forms muscles, bones, and the circulatory system. The periderm is not a germ layer but a temporary layer in the development of the skin.
Conclude that the correct answer is the endoderm, as it is the inner germ layer formed during embryonic development.
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