Question

explain the terms
implantation and placenta
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Answer 1

Answer:

IMPLANTATION--- The attachment of the embryo to Uterus by a membrane or tissue (placenta) is called implantation. PLACENTA- It is a tissue which transports oxygen and food from mother's blood to the foetus and carries waste material from foetus to mother's blood.

Answer 2

Answer:

(i) Implantation: The embedding

of a fertilised mammalian egg (embryo) into the inner thick wall of the uterus (womb) where it will continue its development is called implantation.

(ii) Placenta: It is a complex double-layered spongy vascular tissue in human female formed by the joint activity of maternal and foetal tissues in the wall of uterus that is meant for attachment, nourishment and waste disposal for the foetus.

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