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After the blastula stage what is the following stage of the embryonic development? How is the passage from blastula to the next stage called?
5What is the function of the vitellus in the vertebrate egg? How are these eggs classified according to the amount of vitellus within them?
5What are the main substances transferred from the mother to the fetus through the placenta and from the fetus to the mother?
5What is the cell division during the first stage of the embryonic development called? How is this stage characterized?
5After the morula stage what is the next stage? What is the morphological feature that defines that stage?
5
What are pleura?
What is the function of the yolk sac?
How are animals classified according to the germ layers present in their embryonic development?
Classify the animals based on the germ layers in their embryonic development?
What is gastrulation? How during gastrulation are the &rst two germ layers formed? Which are these germ layers?
Explain monozygotic and dizygotic twins?
What is the embryonic origin of the nervous system in vertebrates?
What is coelom? Are all animals coelomate?
Explain gastrulation?
Explain vegetal pole?
What is the significance of placenta?
What is the main function of placenta?
What are histogenesis and organogenesis?
What are the archenteron and the blastopore? What are the destinations of the archenteron and of the blastopore?
Are all animals coelomate?
