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Karnataka Board PUCPUC Science 2nd PUC Class 12

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

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Question

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

Short/Brief Note
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Solution

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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Chapter 4: Reproductive Health - VERY SHORT ANSWER [Page 27]

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NCERT Exemplar Biology Exemplar [English] Class 12
Chapter 4 Reproductive Health
VERY SHORT ANSWER | Q 9. | Page 27

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RELATED QUESTIONS

A large number of married couples the world over are childless. It is shocking to know that in India the female partner is often blamed for the couple being childless.

  1. Why in your opinion the female partner is often blamed for such situations in India? Mention any two values that you as a biology student can promote to check this social evil.
  2. State any two reasons responsible for the cause of infertility.
  3. Suggest a technique that can help the couple to have a child where the problem is with male partner.

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.


Correct the following statement:

In E. T. techniques, embryos are always transferred into the uterus.


Write a brief note on the causes of infertility.


Fill in the blank:

The primary sex organ in human male is _______.


Fill in the blank:

Gonorrhoea is caused by _______ bacteria.


Identify the IUD in the given diagram.


Expand the following.

ICSI


AI is the preferred technique used incase of ____________.


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


Which of the following is ART?


Which method can be used for women that cannot produce ovum but can provide suitable environment?


The first case of IVF-ET technique success, was reported by ______.


Which of the following is a non-medicated intrauterine device (IUD)?


In ET technique embryo is transferred into ______.


ZIFT is transfer of ______.


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


In ZIFT method, there is ______.


Give a term for the following:

An ART in which eggs are removed from the ovary of the female, fertilised and then placed in her fallopian tube.


Expand the term ZIFT.


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