Explain coeloms.

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Explain blastopore?

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Explain gastrulation?

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What are extra embryonic membranes? Name these layers in vertebrates?

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From which germ layer does coeloms originate?

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Which cells are produced in the first stage of embryonic development?

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What is placenta?

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What stage follows gastrulation?

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What is yolk sac?

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When are archenteron and blastopore formed?

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Classify the animals based on the germ layers in their embryonic development?

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Explain organogenesis?

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Which hormones are produced by placenta? What is their significance?

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What are the functions of placenta?

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Explain notochord?

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