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Karnataka Board PUCPUC Science 2nd PUC Class 12

Suggest some methods to assist infertile couples to have children. - Biology

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Question

Suggest some methods to assist infertile couples to have children.

Very Long Answer
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Solution

ART (Assisted Reproductive Technologies) is a term that describes several different methods used to help infertile couples. ART involves removing eggs from a woman’s body, mixing them with sperm in the laboratory and putting the embryos back into a woman’s body.
Success rates vary depending on many factors. Some factors that affect the success rate of ART include the age of the partners, the reason for infertility, the type of ART, and whether the egg is fresh or frozen. Various methods are now available to help such couples: in vitro fertilization, gamete intra-fallopian transfer, intra-cytoplasmic sperm injection, and artificial insemination.

  1. Test tube babies: The union of ovum and sperm occurs outside the woman’s body, resulting in a zygote that divides into an embryo. The embryo is deposited in the uterus and eventually grows into a foetus.
  2. Gamete Intra Fallopian Transfer (GIFT): A procedure in which eggs are retrieved from a woman, mixed with sperm and immediately replaced in one or other of the woman’s fallopian tubes so that they fertilize inside the body (invivo).
  3. Intra Cytoplasmic Sperm Injection (ICSI): In this method, sperm and eggs are retrieved from both parents. A single sperm is injected directly into an egg; then, the fertilized egg is implanted into the woman’s uterus.
  4. Artificial insemination technique (AIT): In this technique, the semen is collected either from the husband or a healthy donor and is artificially introduced either into the vagina or into the uterus of the female (IUI - Intra uterine insemination).
  5. Zygote intra fallopian transfer (ZIFT): ZIFT later transfers the zygote or early embryo to a woman’s fallopian tube.
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Chapter 4: Reproductive Health - NCERT EXERCISES WITH ANSWERS [Page 142]

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Nootan Biology [English] Class 12 ISC
Chapter 4 Reproductive Health
NCERT EXERCISES WITH ANSWERS | Q 9. | Page 142

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RELATED QUESTIONS

State True/False with explanation.

Infertility is defined as the inability to produce a viable offspring and is always due to abnormalities/defects in the female partner.


Write a brief note on the causes of infertility.


Expand the following: 

ZIFT


Give four causes of infertility in males.


Fill in the blank:

The primary sex organ in human male is _______.


Identify the IUD in the given diagram.


Correct the following statement.

Transfering of an embryo with more than 8 blastomeres into the uterus is called GIFT.


The procedure of GIFT involves the transfer of female gametes into the fallopian tube, can gametes be transferred to the uterus to achieve the same result? Explain.


Expand the following.

ICSI


In which technique of ART is a single sperm injected directly into the cytoplasm of the ovum?


Generally the zygote or early embryo with how many blastomeres is transferred into the fallopian for further development, in IVF?


Which Artificial Reproductive Technique can help a lady conceive a child if both her fallopian tubes are blocked?


In ______ the egg is first fertilized outside the body and then it is inserted into the oviduct.


The highly sophisticated procedure of directly injecting a sperm into an egg is called ______.


Test-tube baby is one who ______.


Choose the correct statement regarding the ZIFT procedure.


Which of the following is ART?


Which of these can be used to cure infertility in couples where male partner has very low sperm count?


In ET technique embryo is transferred into ______.


ZIFT is transfer of ______.


Mark the odd one.


Identify the correct reasons for infertility.

(i) Drugs

(ii) Diseases

(iii) Congenital

(iv) Use of Contraceptives

(v) Immunological or psychological

(vi) Assisted reproductive technology


The stage transferred into the lotuses after induced fertilization of ova in the laboratory is ______.


Males in whom testes fail to descend to the scrotum are generally infertile. Why?


Briefly explain IVF and ET What are the conditions in which these methods are advised?


Read the given below statements carefully and state whether the following are true (T) or false (F).

  • I - MOET is one of the methods of IVF.
  • II - ICSI is a method useful only for males who are unable to inseminate.
  • III - MTP is considered safe during the first 1 week of pregnancy.
  • IV - LNG-20, multi-load 375 are hormone-releasing IUDs.
  • V - Steroids inhibit ovulation and implantation.

Choose the correct option regarding the above-given statements.


Write the long form of GIFT.


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