What are the archenteron and the blastopore? What 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
After the neurula stage and from its ventral portion to the dorsal how can the morphology of the embryo be described?1
What is gastrulation? How during gastrulation are the first two germ layers formed? Which are these germ layers?1
Which is the extra embryonic membrane whose function is to store nitrogen wastes of the embryo? Is this function present in placental mammalian embryos?1
What is the chorioallantois membrane present in the embryonic development of reptiles and birds? How does this membrane participate in the energetic metabolism of the embryo?1
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?1
Are all animals coelomate?
What is coelom?
After the morula stage what is the next stage? What is the morphological feature that defines that stage?
How is the mesoderm of triploblastic animals formed?
What is the cell division during the first stage of the embryonic development called?
What are pleura, pericardium, and peritoneum?
What are the animal pole and the vegetal pole of the vertebrate egg?
Genetically what are the two types of twins that can be generated?
What are histogenesis?
What is gastrulation? How during gastrulation are the first two germ layers 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?
How notochord structure id formed?
In which type of animals does the placenta exist?
Classify the animals based on the germ layers in their embryonic development?