Question:

Correct the following statements.
(a) Surgical methods of contraception prevent gamete formation.
(b) All sexually transmitted diseases are completely curable.
(c) Oral pills are very popular contraceptives among rural women.
(d) In E.T.techniques embryos are always transferred into the uterus.

Updated On: Oct 5, 2023
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Solution and Explanation

(a) Surgical methods of contraception prevent gamete formation. 

Correction

 Surgical methods of contraception prevent the flow of gamete during intercourse.

(b) All sexually transmitted diseases are completely curable. 

Correction

 Some of the sexually transmitted diseases are curable if they are detected early and treated properly. AIDS is still an incurable disease. 

(c) Oral pills are very popular contraceptives among the rural women. 

Correction 

Oral pills are very popular contraceptives among urban women. 

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

Correction 

In embryo transfer technique, 8 celled embryos are transferred into the fallopian tube while more than 8 celled embryos are transferred into the uterus.

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Questions Asked in CBSE CLASS XII exam

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Concepts Used:

Infertility

Infertility is described as not being able to get pregnant in spite of having frequent, unprotected sex for not less than a year for most couples. Infertility may result from an issue with either you or your partner or a combination of factors that stops a pregnancy.

Symptoms:

The major symptom of infertility is not getting pregnant. There may be no other apparent symptoms. Sometimes, women with infertility may have irregular or missing menstrual periods. In some cases, men with infertility may have some signs of hormonal issues, like changes in hair growth or sexual function.

Causes of male infertility:

  • Abnormal sperm production or function
  • Problems with the delivery of sperm
  • Overexposure to certain environmental factors
  • Damage related to cancer and its treatment

Causes of female infertility

  • Ovulation disorders
  • Uterine or cervical abnormalities
  • Fallopian tube damage or blockage
  • Endometriosis
  • Primary ovarian insufficiency
  • Pelvic adhesions
  • Cancer and its treatment.