To which structures do coeloms give birth? Are all animals coelomate?

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What is the cell division during the first stage of the embryonic development called?

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What is the function of the yolk sac?

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What is the chorioallantois membrane present in the embryonic development of reptiles and birds?

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From which germ layer do the liver and the pancreas originate?

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How during gastrulation are the first two germ layers formed? Which are these germ layers?

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From which germ layer do the liver and the pancreas originate? What are other organs and tissues made from that germ layer?

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In which type of animals does the placenta exist?

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How is the neural tube formed?

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From which germ layer do blood cells originate? What are other organs and tissues made from that germ layer?

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What are the archenteron and the blastopore? What are the destinations of the archenteron and of the blastopore?

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From which germ layer do the epidermis and the nervous system originate?

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What is gastrulation? How during gastrulation are the first two germ layers formed?

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What is coelom? Are all animals coelomate?

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What is gastrulation?

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