NCERT Solutions for Class 12 Biology Chapter 4

1. What Do You Think is the Significance of Reproductive Health in Society?

Ans. Healthy reproductive organs with normal functions are referred to as reproductive health. Physical, emotional, behavioral, and social elements of reproduction are all included. It aids in the prevention of sexually transmitted illnesses such as syphilis, AIDS, and others. educating people about birth control options, prenatal care, postnatal care for the mother and child, the importance of breastfeeding, and equal opportunities for male and female children, among other topics, would address the importance of raising socially conscious, healthy families of the desired size. It also aids in the reduction of social ills such as sex abuse and sex-related crimes. This will contribute to the development of a socially responsible and healthy society.

2. Suggest the Aspects of Reproductive Health That Need Special Attention in the Present Scenario.

Ans. In the current situation, the following components of reproductive health require special attention:

• Raising public awareness about hygienic sexual practices and sexually transmitted diseases (STDs), available contraceptive options, and so on.

• Providing medical aid and care to those who are experiencing reproductive issues such as pregnancy, delivery, STDs, abortions, contraception, menstruation disorders, infertility, and so on.

3. Is Sex Education Necessary in Schools? Why?

Ans. Yes, sex education in schools is vital to deliver accurate knowledge to young persons to prevent children from believing in myths and having misconceptions about sex-related issues. Information on reproductive organs, adolescence and related changes, safe and hygienic sexual behaviors, sexually transmitted diseases (STDs), AIDS, and other topics helps to lead a healthy productive life.

4. Do You Think That Reproductive Health in Our Country Has Improved in the Past 50 Years? If Yes, Mention Some Such Areas of Improvement.

Ans: Yes, our country's reproductive health has improved in the last 50 years. The following areas should be improved:

• Increased awareness of sex-related issues.

• Lower mother and newborn mortality rates due to an increase in medically assisted deliveries and improved postnatal care.

• A rise in the number of couples with small children.

• The number of couples with small families has increased.

5. What are the Suggested Reasons for Population Explosion?

Ans: The following are some of the theories for population explosion:

• Rapid death rate fall.

• A decrease in the rate of maternal mortality.

• Reduction in newborn mortality.

• The number of people of reproducible age has increased.

• The population's birth rate is rising.

6. Is the Use of Contraceptives Justified? Give Reasons.

Ans: Contraceptive use is justified because:

• It helps to limit the rapid growth of the human population.

• They do not affect sexual desire or sexual act.

• They also aid in the prevention of undesired pregnancies.

• The majority of contraceptives also aid in the prevention of STDs.

7. Removal of Gonads Cannot Be Considered as a Contraceptive Option. Why?

Ans: The removal of the gonads cannot be regarded as a contraceptive option because it will result in infertility for the rest of one's life. It will also halt the secretion of several key hormones required for body function.

8. Amniocentesis for Sex Determination is Banned in Our Country. Is This Ban Necessary? Comment.

Ans: Yes, the restriction is important since it is being utilized in our country to determine the gender of a kid before birth and subsequently abort if it is a female.

9. Suggest Some Methods To Assist Infertile Couples To Have Children.

Ans: The following are some strategies for assisting infertile couples in having children:

• Baby-in-a-tube program: The ova from the wife/donor (female) and the sperms from the husband/donor (male) are collected and induced to form a zygote in the laboratory under simulated conditions. The zygote created is subsequently put into a typical female's fallopian tube.

• Gamete Intra Fallopian Transfer (GIFT): The transfer of an ovum from a donor into the fallopian tube of another female who cannot produce eggs but can offer a fertile environment.

• Intracytoplasmic sperm injection (ICSI): A sperm is injected directly into the ovum.

• Artificial insemination (AI): Semen is obtained from the husband or a healthy donor and artificially implanted into the female's vaginal or uterine cavity.

10. What are the Measures One Has To Take To Prevent Contracting STDs?

Ans: To avoid catching STDs, take the following precautions:

• Avoid intercourse with unknown or many partners.

• When coitus occurs, always use condoms.

• If in doubt, seek the advice of a skilled doctor for early detection and thorough treatment of disease is found.

11. State True/False With Explanation 

(a) Abortions Could Happen Spontaneously Too. (True/False)

(b) Infertility is defined as the inability to produce viable offspring and is always due to abnormalities/defects in the female partner. (True/False)

(c) Complete lactation could help as a natural method of contraception. (True/False)

(d) Creating awareness about sex related aspects is an effective method to improve the reproductive health of people. (True/False)

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.

12. 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.

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.

NCERT Solutions for Class 12 Biology Chapter 4 - Reproductive Health

NCERT Solution of Chapter 4 Biology Class 12 - Free PDF Download

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Students can use the Vedantu platform to download CBSE Class 12 Biology Chapter 4 NCERT solutions free pdf. These solutions will help students to learn the answers to questions that they are not familiar with and practice their knowledge.

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NCERT Solution for Reproductive Health Class 12 NCERT - Free PDF Download

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CBSE Chapter 4 Class 12 Biology Reproductive Health

Chapter 4 of Class 12th Biology NCERT is titled ‘Reproductive Health.’ And as it is obvious from the title, in this chapter, students learn about the various topics and concerns related to reproductive health.

This is a chapter that holds both academic and personal relevance to all students. Hence, it is recommended that all students should read this chapter carefully and solve all the  NCERT questions that are mentioned at the end of the chapter.

Marks Weightage of Chapter 4 Biology Class 12 NCERT Solutions

Ch 4 Bio Class 12 is a part of Unit 6. In this unit, students learn about the phenomenon of reproduction in organisms belonging to both the plant and animal kingdom. This unit is worth 14 marks and is very important from the perspective of the final examination.

It is advised that students should read the chapters that fall under this unit thoroughly. Students should solve questions that are included in this unit. One can also download Reproductive Health Class 12 NCERT solutions from Vedantu to get a little extra help for free!

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