The placenta functions as

A protective barrier between mother and embryo

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Supply oxygen and nutrients for growth of embryo

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Expel the waste matter excreted by the embryo

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All of the above

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Solution

The correct option is D All of the above
The placenta is the region which is the main connection between mother and child. It connects the umbilical cord of the developing foetus to the mother's uterine wall to perform several functions. It acts as a barrier between the mother and embryo. It helps in the nutrient uptake, waste elimination, thermoregulation and gas exchange in the foetus through the mother's blood supply.
Thus, the correct answer is option D.

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Similar questions

Q. The placenta is an organ that develops in a mother's uterus during pregnancy. Placenta provides oxygen and nutrients to the growing foetus and removes waste products from foetal blood. What kind of membrane will enable placenta to carry out its function?

Q. Observe the given figure

Which of the following labelled structures helps in the exchange of nutrients, oxygen and waste products between the embryo and the mother?

Q. Observe the given figure and answer the question:

Which of the following labelled structures helps in the exchange of nutrients, oxygen and waste products between the embryo and the mother?

Q. Which one of the following best describes the function of the umbilical cord ? It :
(a) feeds the embryo with digested substances.
(b) conveys nutrients and wastes to and from the embryo respectively
(c) removes waste matter from the embryo to the mother's blood.
(d) supplies oxygenated blood from the mother to the embryo.

Assertion (A): Earthworms are referred as ‘Farmer’s friend’.
Reason (R): After digesting organic matter, earthworms excrete a nutrient- rich waste product called castings that directly influence healthy plant growth.

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