Asked by Karly Easterling on Jun 16, 2024
Verified
The formation of endodermal and epidermal germ layers occurs at ________.
A) gastrulation
B) cleavage
C) fertilization
D) blastula formation
Endodermal
Pertaining to the innermost layer of the embryonic germ layers, which gives rise to the lining of the digestive and respiratory systems.
Epidermal
Relating to the epidermis, the outermost layer of skin, which provides a barrier against environmental damage.
- Gain insight into the processes of embryonic development.
Verified Answer
MT
Manjot ThindJun 20, 2024
Final Answer :
A
Explanation :
The formation of endodermal and epidermal germ layers occurs during gastrulation, which is the process of cell migration and differentiation that occurs after the blastula stage. Cleavage, fertilization, and blastula formation occur earlier in embryonic development and do not involve the formation of distinct germ layers.
Learning Objectives
- Gain insight into the processes of embryonic development.