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प्रश्न
Assertion (A): The foetus respires but does not breathe.
Reason (R): The maternal blood supplies oxygen to the foetus through placenta.
पर्याय
A is True and R is False.
A is False and R is True.
Both A and R are True.
Both A and R are False.
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उत्तर
Both A and R are True.
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संबंधित प्रश्न
Give appropriate terms for the following:
Rupture of follicle and release of ovum from the ovary.
Complete the following table by writing the name of the structure or the function of the given structure:
| Structure | Function | ||
| 1 | Corpus luteum | 1 | …………… |
| 2 | ……………. | 2 | Produces male gametes in mass |
| 3 | Placental disc | 3 | …………………….. |
| 4 | . ……………. | 4 | Increases the force in uterine contractions during child birth |
| 5 | Umbilical cord | 5 | …………………. |
| 6 | Fallopian tube | 6 | ………………… |
The circulatory system of the fetus and that of the mother are never connected directly. What are the advantages?
Give Reasons
The full-grown human embryo respires but does not breathe.
Differentiate
Fetus and Embryo.
Complete the following sentences with appropriate word:
The umbilical cord connects _______
A disc-like structure attached to the uterine wall that supplies food and oxygen to the foetus and removes waste is known as which of the following?
Which characteristic describes the direction of blood flow through the umbilical arteries?
At what stage of development does implantation occur post-fertilisation?
The placenta is described as a temporary structural and functional connection between which two circulations?
