Explain vegetal pole?
Explain foetal pole?
What are the main substances transferred from the mother to the fetus through the placenta and from the fetus to the mother?
What is yolk sac?
Which is the extra embryonic membrane whose function is to store nitrogen wastes of the embryo? Is this function present in placental mammalian embryos?
What are the archenteron and the blastopore? What is the stage of the embryonic development in which these structures are formed?
Explain gastrulation? What stage follows gastrulation?
What is the function of the vitellus in the vertebrate egg?
Explain pericardium?
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?
Genetically what are the two types of twins that can be generated?
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?
In which type of animals does the placenta exist?
What is notochord?
After the neurula stage and from its ventral portion to the dorsal how can the morphology of the embryo be described?
