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NCERT · Class 12 · Biology

Chapter 3: Reproductive Health

Practice each question, then open the answer or worked solution.

Textbook exercises

12 questions
Q11Multiple choice

State True/False With Explanation 

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Correct option: A
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Worked solution

Ans: 

(a) True, abortions can occur spontaneously due to a variety of internal reasons.

(b) False. Infertility is described as a couple's inability to have a child following unprotected sexual cohabitation, and it can be caused by abnormalities/defects in either the male or female or both.

(c) False, Breastfeeding is a natural means of contraception, however, it is only effective for the duration of the lactation period, which lasts six months after parturition.

(d) True, Increasing sex-related understanding gives important information regarding reproductive health.

Q12Multiple choice

Correct the following statements:

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Correct option: A
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Worked solution

Ans: 

(a) Surgical contraception prevents the flow of gametes during sexual activity.

(b) There is no cure for all sexually transmitted diseases.

(c) Oral contraceptives are particularly common among metropolitan women.

(d) The E.T. procedure involves transferring 8 celled embryos into the fallopian tube and more than 8 celled embryos into the uterus.