Explain the following terms a) Placenta b) Allogamy c) Fertilization d) Triple fusion e) Viviparous germination
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Placenta: A temporary organ that joins the mother and fetus, transferring oxygen and nutrients from the mother to the fetus and permitting the release of carbon dioxide and waste products from the fetus. ... The upper surface of the placenta is smooth, and the under surface is rough. The placenta is rich in blood vessels.
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