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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, pericardium, and peritoneum?
What are the archenteron and the blastopore? What is the stage of the embryonic development in which these structures are formed?
What is polyembryony?
Name the three types of germ layers that form tissues and organs in animals?
Are all animals coelomate?
What is the function of the vitellus in the vertebrate egg?
Explain monozygotic and dizygotic twins?
From which germ layer do the epidermis and the nervous system originate? What are other organs and tissues made from that germ layer?
Explain animal pole?
How is the notochord structure formed?
From which germ layer do blood cells originate? What are other organs and tissues made from that germ layer?
Explain the embryonic development stages after formation of blastula?
What are the archenteron and the blastopore?
Explain histogenesis?
Which is the extra embryonic membrane whose function is to store nitrogen wastes of the embryo?
