What is placenta?

Special tissue connection between embryo and uterine wall

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Facilitate passage of nutrition and oxygen to embryo from mother through blood

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Waste substances produced by embryo are removed through placenta into mothers blood

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All of the above

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Solution

The correct option is D All of the above
Placenta is a special organ or tissue that connects the developing fetus to the uterine wall. It allows nutrient uptake, waste elimination, gas exchange via the mother's blood supply, fight against internal infection and produces a hormone to support pregnancy.

Therefore, the correct answer is option D.

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Similar questions

Q. Placenta is the special tissue through which nutrients are transferred from mother to the growing embryo.

The disc-like tissue embedded in the uterine wall which provides nutrition to the embryo within the womb is known as the placenta.

Q. Placenta provides nutrition to the developing embryo.

Q. What connects the embryo to the placenta?

When a fertilised egg E formed in the oviduct of a human female divide repeatedly to form an embryo, the embryo gets implanted in the thick and soft lining of the uterus. After this, a disc-like special tissue T develops between the uterus wall and embryo through which all the requirements of the developing embryo (and foetus) are met from the mother's body. The embryo is connected to the tissue T through a string like structure S.
(a) What is the other name of fertilised egg cell E?
(b) What is the name of tissue T?
(c) Name the string-like structure S.
(d) Name two substances which pass from mother's blood to embryo through tissue T and, one type of substance which passes from embryo to mother's blood.
(e) What happens to S when the baby is born? Why?

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