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Q7:
Removal of gonads cannot be considered as a contraceptive option. Why?
Solution :
1. Definitions and Biological Context
In the study of reproductive biology, a contraceptive method is defined as a technique or agent intended to prevent pregnancy by interfering with the normal process of ovulation, fertilization, or implantation. Crucially, contraceptive methods are intended to be reversible or non-systemic in their alteration of the individual's hormonal landscape, aiming to achieve fertility control without disrupting the fundamental physiological equilibrium of the endocrine system.
2. Physiological Role of Gonads
Gonads (testes in males, ovaries in females) are primary sex organs. They serve two essential functions:
- Gametogenesis: The production of gametes (sperm and ova).
- Endocrine Function (Hormone Secretion): The secretion of sex steroids—testosterone, estrogen, and progesterone—into the bloodstream. [Per the HPG Axis - Hypothalamic-Pituitary-Gonadal axis].
3. Systematic Consequences of Gonadectomy
The removal of gonads (orchidectomy or oophorectomy) induces a state of surgical castration, leading to profound physiological and psychological systemic effects:
| System | Consequence of Gonad Removal |
|---|---|
| Endocrine | Abrupt cessation of sex steroid production, leading to total hormonal imbalance. |
| Metabolic | Altered lipid metabolism, loss of bone density (osteoporosis), and changes in muscle mass. |
| Psychosocial | Severe impairment of secondary sexual characteristics, libido, and emotional regulation. |
4. Comparative Analysis: Contraception vs. Sterilization
Contraception aims to manage fertility while maintaining the structural and functional integrity of the reproductive system. Gonadectomy is a mutilative procedure that exceeds the scope of contraception because:
- Irreversibility: Unlike tubectomy or vasectomy (which block ducts), gonadectomy removes the organ itself, making future fertility impossible [By principles of irreversible surgical intervention].
- Hormonal Dependence: Because gonads are essential for regulating systemic health, their removal necessitates lifelong hormone replacement therapy (HRT) to mitigate the risks of metabolic diseases.
- Ethical and Medical Standards: Medical ethics prohibit non-therapeutic surgical removal of healthy organs. Contraception is an elective choice for family planning, whereas gonadectomy is a medical intervention typically reserved for pathological conditions (e.g., malignancy).
Final Solution: Removal of gonads is not a contraceptive option because it results in the permanent loss of gamete production and, more critically, the cessation of vital endocrine functions, leading to severe physiological instability and irreversible health complications. Contraception is designed to be a safe, fertility-limiting practice, whereas gonadectomy is a radical, organ-removing surgical procedure.
More Questions from Class 12 Biology Reproductive Health EXERCISES
- Q1: What do you think is the significance of reproductive health in a society?
- Q1: What do you think is the significance of reproductive health in a society?
- Q2: Suggest the aspects of reproductive health which need to be given special attention in the present scenario.
- Q2: Suggest the aspects of reproductive health which need to be given special attention in the present scenario.
- Q3: Is sex education necessary in schools? Why?
- Q3: Is sex education necessary in schools? Why?
- Q4: Do you think that reproductive health in our country has improved in the past 50 years? If yes, mention some such areas of improvement.
- Q4: Do you think that reproductive health in our country has improved in the past 50 years? If yes, mention some such areas of improvement.
- Q5: What are the suggested reasons for population explosion?
- Q5: What are the suggested reasons for population explosion?
- Q6: Is the use of contraceptives justified? Give reasons.
- Q6: Is the use of contraceptives justified? Give reasons.
- Q7: Removal of gonads cannot be considered as a contraceptive option. Why?
- Q8: Amniocentesis for sex determination is banned in our country. Is this ban necessary? Comment.
- Q8: Amniocentesis for sex determination is banned in our country. Is this ban necessary? Comment.
- Q9: Suggest some methods to assist infertile couples to have children.
- Q9: Suggest some methods to assist infertile couples to have children.
- Q10: What are the measures one has to take to prevent from contracting STDs?
- Q10: What are the measures one has to take to prevent from contracting STDs?
- Q11(a): State True/False with explanation (a) Abortions could happen spontaneously too. (True/False)
- Q11(a): State True/False with explanation (a) Abortions could happen spontaneously too. (True/False)
- Q11(b): State True/False with explanation (b) Infertility is defined as the inability to produce a viable offspring and is always due to abnormalities/defects in the female partner. (True/False)
- Q11(b): State True/False with explanation (b) Infertility is defined as the inability to produce a viable offspring and is always due to abnormalities/defects in the female partner. (True/False)
- Q11(c): State True/False with explanation (c) Complete lactation could help as a natural method of contraception. (True/False)
- Q11(c): State True/False with explanation (c) Complete lactation could help as a natural method of contraception. (True/False)
- Q11(d): State True/False with explanation (d) Creating awareness about sex related aspects is an effective method to improve reproductive health of the people. (True/False)
- Q11(d): State True/False with explanation (d) Creating awareness about sex related aspects is an effective method to improve reproductive health of the people. (True/False)
- Q12(a): Correct the following statements : (a) Surgical methods of contraception prevent gamete formation.
- Q12(a): Correct the following statements : (a) Surgical methods of contraception prevent gamete formation.
- Q12(b): Correct the following statements : (b) All sexually transmitted diseases are completely curable.
- Q12(b): Correct the following statements : (b) All sexually transmitted diseases are completely curable.
- Q12(c): Correct the following statements : (c) Oral pills are very popular contraceptives among the rural women.
- Q12(c): Correct the following statements : (c) Oral pills are very popular contraceptives among the rural women.
- Q12(d): Correct the following statements : (d) In E. T. techniques, embryos are always transferred into the uterus.
- Q12(d): Correct the following statements : (d) In E. T. techniques, embryos are always transferred into the uterus.
CBSE Solutions for Class 12 Biology Reproductive Health
Chapters in CBSE - Class 12 Biology
- Reproduction in Organisms
- Human Reproduction
- Principles of Inheritance and Variation
- Molecular Basis of Inheritance
- Evolution
- Human Health and Disease
- Strategies for Enhancement in Food Production
- Microbes in Human Welfare
- Biotechnology: Principles and Processes
- Biotechnology and Its Applications
- Organisms and Populations
- Ecosystem
- Biodiversity and Conservation
- Environmental Issues
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