From which germ layer do the epidermis and the nervous system originate? What are other organs and tissues made from that germ layer?
1What is the stage of the embryonic development in which these structures are formed? What are the destinations of the archenteron and of the blastopore?
1
What is umbilical cord?
Explain animal pole?
Classify the animals based on the germ layers in their embryonic development?
Explain coeloms.
What are twins? Genetically what are the two types of twins that can be generated?
Genetically what are the two types of twins that can be generated?
Why can the allantois be considered an adaptation to terrestrial life?
Explain pericardium?
What is the function of the umbilical cord?
What are the destinations of the archenteron and of the blastopore?
Are all animals coelomate?
Explain organogenesis?
Define polyembryony?
How is the mesoderm of triploblastic animals formed?
How does the embryo turn from gastrula into neurula? How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates?
