In a context of amniocentesis, which of the following statement is incorrect?
It is used for prenatal sex determination
It can be used for detection of down syndrome
It can be used for detection of cleft palate
It can be used for detection of cleft palate
C.
It can be used for detection of cleft palate
Cleft palate is a developmental abnormality which may occur in the developing foetus and so it can be detected by sonography and not amniocentesis.
It is commonly observed that parents feel embarrassed to discuss freely with their adolescent children about sexuality and reproduction. The result of this parental inhibition is that the children go astray sometimes.
(a) Explain the reasons that you feel are behind such embarrassment amongst some parents to freely discuss such issues with their growing children.
(b) By taking one example of a local plant and animal, how would you help these parents to overcome such inhibitions about reproduction and sexuality ?
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.
(a) 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.
(b) State any two reasons responsible for the cause of infertility.
(c) Suggest a technique that can help the couple to have a child where the problem is with the male partner.
Which of the following cannot be detected in a developing foetus by amniocentesis?
Klinefelter's syndrome
sex of the foetus
Down's syndrome
Down's syndrome
Which of the following approaches does not give the defined action of contraceptive?
| Intra-uterine devices | Increase phagocytosis of sperms, suppress sperm motility and fertilising capacity of sperms. |
| Hormonal contraceptives | Prevent/retard entry of sperms, prevent ovulation and fertilisation |
| Vasectomy | Prevents spermatogenesis |
| Vasectomy | Prevents spermatogenesis |
