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प्रश्न
Explain the concept of IVF.
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उत्तर
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It is also known as in-vitro fertilization.
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In this process, sperm is collected from the father or any male donor and similarly, an ovum is collected from the mother or any female donor, then this is fertilized in the laboratory using sterilizing conditions.
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Now when the embryo is formed, it is transferred to the mother or the surrogate.
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Embryo up to 8 blastomere stage is transferred in the fallopian tube whereas blastomere more than 8 blastomeres is transferred in the uterus.
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The process is carried out in a laboratory along with high precision and a sterilized environment and these methods are a part of Assisted Reproductive Technology(ART).
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Though these processes are difficult and high precision should be maintained they have many helped many couples who were unable to conceive.
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संबंधित प्रश्न
Draw a diagrammatic sectional view of the female reproductive system of human and label the parts
(i) where the secondary oocytes develop
(ii) which helps in collection of ovum after ovulation
(iii) where fertilization occurs
(iv) where implantation of embryo occurs.
Fill in the blank:
The time between fertilisation and birth is called _________.
Name two hormones secreted by ovary of female reproductive system.
Name the Following
The structure formed after the release of ovum from the Graffian follicle.
Complete the following sentences with appropriate word:
The female equivalent of the penis is the _______.
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?
______ pollen mother cells should undergo meiotic division to produce 64 pollen grains.
Stratum germinativum is an example of which kind of epithelium?
Which one is correct for mammalian testis?
To produce 400 seeds, the number of meiotic divisions required will be ______
The embryo in humans gets nutrition from the mother’s blood with the help of a special tissue 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.
Select the correct sequence of various physical and chemical events that take place during fertilisation.
P. Fusion of cortical granules with the plasma membrane of secondary oocyte.
Q. Formation of fertilization cone to receive sperm.
R. Release of sperm lysin from acrosome.
S. Mixing up of chromosomes of a sperm and an ovum.
How does fertilisation take place? Fertilisation occurs once in a month. Comment.
One mature ovum is released once every ______ days.
Female reproductive organs and associated functions are given below in column A and B. Fill the blank boxes.
| Column A | Column B |
| Ovaries | Ovulation |
| Oviduct | a |
| b | Pregnancy |
| Vagina | Birth |
Draw a neat diagram of the female reproductive system and label the parts associated with the following:
(a) production of gamete
(b) site of fertilisation
(c) site of implantation
(d) birth canal
Explain how the uterus and placenta provide necessary conditions for proper growth and development of the embryo after implantation?
The ______ is also called the womb.
Rewrite the terms in the correct order so as to be in a logical sequence.
Graafian follicle, ostium, uterus, fallopian tube, ovum.
Choose the odd one out from the group of terms given below and write the category for the remaining terms:
