Name the three types of germ layers that form tissues and organs in animals?

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What are pericardium?

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What is coelom? To which structures do coeloms give birth?

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How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates?

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What is umbilical cord?

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

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What is the stage of the embryonic development in which these structures are formed?

1

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

1

Explain coeloms.

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Explain histogenesis?

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

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What is yolk sac?

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Explain vegetal pole?

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What stage follows gastrulation?

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What is the function of the umbilical cord?

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