Answer / Kanchan Mala

The yolk sac functions as a temporary storage for nutrients, provides support to the developing embryo, and helps in the formation of some organs such as the liver.

Why can the allantois be considered an adaptation to terrestrial life?

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Why can the amnion also be considered an adaptation to terrestrial life?

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What is the function of the umbilical cord?

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What is placenta?

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Explain archenteron?

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

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After the neurula stage and from its ventral portion to the dorsal how can the morphology of the embryo be described?

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Explain peritoneum?

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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?

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

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Which hormones are produced by placenta?

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

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