CBSE Questions for Class 12 Medical Biology Reproductive Health Quiz 6 - MCQExams.com

Ovum from donor female and sperm from donor male are fertilized in laboratory(in vitro fertilization). The zygote or early embryo(upto 8 blastomeres stage)  then transferred to fallopian tube called zygote intra fallopian transfer or ZIFT. So, the correct answer is 'Embryo upto 8 blastomeres, if zygote is not transplanted'.

A number of special ART techniques which assist infertile couples to have children. Some prominent techniques are:

1. Test tube baby programme (IVF-ET)

2. Gamete intra fallopian transfer( GIFT).

3. Intra cytoplasmic sperm injection(ICSI).

4. Artificial insemination technique(AIT).

Test tube baby: Ovum from donor female and sperm from donor male are fertilized in laboratory. The zygote or early embryo(upto 8 blastomeres stage) then transferred to fallopian tube called zygote intra fallopian transfer or ZIFT.
So, the correct answer is 'Zygote intrafallopian transfer'.

The zygote or early embryo (upto 8 blastomeres stage) is transferred to fallopian tube called zygote intra fallopian transfer or ZIFT. IUT (Intrauterine transfer), the embryo with more than 8 blastomeres is transferred into the uterus. So, the correct answer is 'Uterus'.

• Assisted reproductive technology (ART) are medical procedures to treat infertility. With ART, the process of sexual intercourse is bypassed and fertilization of the oocytes occurs in the laboratory environment (i.e., in vitro fertilization).
• Types of Assisted reproductive technology includes Gamete intrafallopian transfer, Artificial insemination, In vitro fertilization and embryo transfer, preimplantation genetic diagnosis (PGD), surrogacy, donor conception, intracytoplasmic sperm injection (ICSI) and Zygote intrafallopian transfer (ZIFT).
• Hence Assisted reproductive technology does not include Zygote extra-fallopian transfer.
• So, the correct answer is 'Zygote extra-fallopian transfer'.

A. IUT- This technique is used in which female cannot produce ovum.

B. GIFT- This technique is used in which female cannot produce ovum but provide suitable envoirnment for fertilization.

C. Artificial insemination- The technique is used in those females where the husband either is unable to inseminate or has very low sperm count. In such cases the semen of the husband or donor male is first collected and then is artificially introduced either into the vagina or into the uterus(intra- uterine insemination or IUI) of the female.

D. ICSI- This technique is used in which female cannot produce ovum.

So, the correct answer is 'Artificial insemination'.

A. IVF- In vitro fertilization is a method in which fertilization of male gamete (spermatozoon) and female gamete (ovum) outside the body in almost similar conditions as that in the body followed by zygote or embryo transfer(ET).

B. IUT- The embryo with more than 8 blastomeres is transferred into the uterus.

C. GIFT- In this, ovum from the donor female is surgically removed and is then introduced into the fallopian tube of  females.

D. ZIFT- The zygote or early embryo (upto 8 blastomeres stage) is transferred to fallopian tube called zygote intra fallopian transfer or ZIFT.

So, the correct answer is 'GIFT'.

In vitro fertilization is a method in which fertilization of male gamete (spermatozoon) and female gamete (ovum) outside the body in almost similar conditions as that in the body followed by zygote or embryo transfer(ET). The zygote or early embryo(upto 8 blastomeres stage) then transferred to fallopian tube called zygote intra fallopian transfer or ZIFT. So, the correct answer is 'Zygote into fallopian tube'.

• In humans, implantation is the stage of pregnancy at which the embryo adheres to the wall of the uterus.
• High levels of prolactin can also be caused by pituitary tumors, certain medications.
• Women with elevated prolactin levels who are trying to conceive(give birth) may experience menstrual and/or ovulatory cycles that are irregular, making it more difficult to become pregnant. Thus higher levels of prolactin cause non-implantation by preventing fertilization by affecting ovarian cycles.
• Hence Elevation of prolactin level in normal female causes non-implantation.
  
• So, the correct answer is 'Non-implantation'.