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प्रश्न
Males in whom testes fail to descend to the scrotum are generally infertile. Why?
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उत्तर
If the testes fail to descend to the scrotum, gametogenesis could be inhibited, the process of spermatogenesis require a marginally lesser ambient temperature than that in the abdominal cavity.
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संबंधित प्रश्न
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.
Explain one application of the following:
ZIFT
Fill in the blank:
Sperm fertilizes ovum in the _______of fallopian tube.
Fill in the blank:
The hormone produced by the testis is _______.
The method of directly injecting a sperm into ovum in assisted by reproductive technology is called ______.
Test-tube baby is one who ______.
Choose the correct statement regarding the ZIFT procedure.
Which of the following is ART?
Which method can be used for women that cannot produce ovum but can provide suitable environment?
In vitro fertilisation is a technique that involves transfer of which one of the following into the fallopian tube?
In ET technique embryo is transferred into ______.
The stage transferred into the lotuses after induced fertilization of ova in the laboratory is ______.
Briefly explain IVF and ET What are the conditions in which these methods are advised?
An infertile couple was advised to undergo In vitro fertilization by the doctor. Out of the options given below, select the correct stage for transfer to the fallopian tube for successful results.
Trace the events from copulation to zygote formation in a human female.
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.
Given below are Column A with a list of certain Assisted Reproductive Technologies (ART) and in Column B the procedures followed during ART:
| Column A | Column B | ||
| S. No. | Names of ART | S. No. | Procedures |
| (A) | GIFT | (i) | Transfer of ovum from a donor into the fallopian tube of another female. |
| (B) | ICSI | (ii) | Transfer of semen from the donor into the vagina of the female. |
| (C) | ZIFT | (iii) | Injecting sperm directly into the ovum. |
| (D) | IUI | (iv) | Transfer of early embryos into the fallopian tube. |
Choose the option where ART correctly matches with the procedure.
The ______ is also called the womb.
Name any two Cu-ions releasing IUDs.
Which one of the following choices reflects the correct number of chromosomes in the zygote and in the second polar body of Drosophila melanogaster?
| Zygote | Meiocytes | |
| I | 08 | 08 |
| II | 04 | 08 |
| III | 08 | 04 |
| IV | 04 | 04 |
