Answer / Deshdeepak Tripathi

The placenta is a temporary organ that develops in mammals during pregnancy. Its primary function is to facilitate the exchange of nutrients, waste products, and gases between the mother and developing fetus through the umbilical cord.

Explain foetal pole?

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What is coelom?

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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 are extra embryonic membranes? Name these layers in vertebrates?

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After the morula stage what is the next stage? What is the morphological feature that defines that stage?

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What are twins? Genetically what are the two types of twins that can be generated?

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How are animals classified according to the germ layers present in their embryonic development?

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Which hormones are produced by placenta?

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From which germ layer does coeloms originate?

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Where do liver and pancreas originate from?

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Which is the extra embryonic membrane whose function is to store nitrogen wastes of the embryo?

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What are the archenteron and the blastopore?

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