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प्रश्न
Give reason.
Placenta is extremely essential for foetal development.
उत्तर
The placenta helps the growing embryo acquire nutrients from the mother's blood. The placenta has villi on the embryo's side of the tissues and blood spaces on the mother's side. These villi have a vast surface area, which aids in the transport of nourishment and oxygen from the mother to the foetus through blood. Waste substances created by the embryo are eliminated into the mother's blood via the placenta. Therefore, Placenta is extremely essential for foetal development.
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संबंधित प्रश्न
Observe the diagram and answer the following questions.
- Label the indicated parts 1, 2 and 3 in the diagram.
- Where the fertilization of ovum occurs?
- Where does the embryo get implanted after fertilization?
The implantation of the embryo occurs at about ______ days of fertilization.
Which of the following are accessory ducts of female reproductive system?
The follicular fluid present in the antrum is secreted by ______
The opening of the vagina is often covered partially by a membrane called ______.
Read the following and answer from given below:
During copulation, semen is released by the penis into the vegina. The motile sperms swim rapidly, fuse with the ovum in the ampullary region, resulting in fertilization. The haploid nucleus of sperm fuses with that of the ovum to form a diploid zygote.
What is the signifacance of fertilisation?
The oviducts are also known as ______.
______ receives the sperms and acts as a birth canal during childbirth.
With a suitable diagram, describe the organisation of mammary gland.
Clitoris is equivalent to the male penis.
