What are the 3 germinal layers present in reptiles during fertilization and how are they formed?

specify the 3 germinal layers .What are the 3 germinal layers present in reptiles during fertilization and how are they formed?
Ectoderm, mesoderm and endoderm. These are formed in the same manner as in other germinal layer formation of mammals.





The three are formed in the gastrulation stage. The first stage is the formation of the primitive gut or what u call the archenteron or gastrocoel, the second stage is the formation of the three germ layers and they serve as the foundation where the organs and systems of the body will take shape. Once the three germ layers are established, the next thing happens is the process called organogenesis where organs start to form.





CNS, sense organs and their skin derivatives (scales) originate from ectoderm.





Heart muscles, urogenital system and vertebral column originate from mesoderm.





Digestive tract and lungs originate from endoderm.





Hope I've helped.