Find the best tutors and institutes for Class 12 Tuition
Q11(c):
State True/False with explanation
(c) Complete lactation could help as a natural method of contraception. (True/False)
Solution :
Statement Analysis
Statement: Complete lactation could help as a natural method of contraception.
Verdict: True
Biological Mechanism: Lactational Amenorrhea
The phenomenon described is scientifically termed Lactational Amenorrhea. This method is based on the physiological fact that ovulation does not occur during the period of intense lactation following parturition [Per the principles of Reproductive Endocrinology].
Step 1: The Neuroendocrine Feedback Loop
The secretion of high levels of the hormone Prolactin is stimulated by the infant's suckling reflex. High concentrations of prolactin exert inhibitory effects on the Hypothalamus and the Anterior Pituitary gland [Mechanism: Negative Feedback Loop].
Step 2: Suppression of Gonadotropins
The elevated levels of prolactin inhibit the pulsatile release of Gonadotropin-Releasing Hormone (GnRH) from the hypothalamus. Consequently, the secretion of Follicle-Stimulating Hormone (FSH) and Luteinizing Hormone (LH) from the anterior pituitary is significantly suppressed.
Step 3: Inhibition of Ovarian Cycle
Without the necessary surge of LH, the maturation of ovarian follicles and the subsequent process of ovulation are prevented. In the absence of ovulation, the female does not enter the menstrual cycle (amenorrhea), thereby preventing conception [Pathophysiological basis].
Analytical Conditions for Efficacy
| Condition | Rationale |
|---|---|
| Exclusive Breastfeeding | Frequency of suckling maintains the prolactin threshold. |
| Duration | Effective only up to a maximum of six months post-parturition. |
| Absence of Menses | The method is reliable only as long as the menstrual cycle has not resumed. |
Visual Representation of Neuroendocrine Suppression
Final Solution: The statement is True. Lactational amenorrhea is a natural, temporary contraceptive method effective for up to six months post-partum, provided the mother exclusively breastfeeds the infant, as the resulting high prolactin levels suppress the pituitary gonadotropins required for ovulation.
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?
- 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(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
Top Tutors who teach Reproductive Health
Top Tutor
Yamare Village, Bangalore
8 yrs of
Exp
1 student
8 hrs of classes completed
1500
per hour
Student's Home
Tutor's home
Hello! I’m Anwar, a certified mathematics tutor with over 10 years of experience helping students excel at every stage, from Primary, Middle School to High School and University level. My passion is to make math clear, engaging, and enjoyable for learners worldwide. I specialize in teaching Maths to students from Grade 8 to Grade 12 across multiple curricula including IGCSE/Cambridge, IB (MYP), GCSE, CBSE and ICSE. I focus on concept clarity and exam-oriented preparation, helping students understand not just how to solve questions, but how to approach them logically. My teaching approach is highly interactive and student-centric. Each session begins with clear explanation of concepts, followed by strategies to decode questions and step-by-step solving methods. Students actively participate during the class and solve questions along with me, which allows me to check their understanding in real time. Once the concepts are tested, students solve questions independently while I closely monitor their working and provide instant feedback wherever required. This method helps students strengthen accuracy, speed and confidence, and is especially effective for students who feel weak or anxious in Maths and Science. I offer one-to-one personalized tutoring with a minimum class duration of one hour, ensuring complete attention and customized learning for every student.
Top Tutor
Aganampudi, Visakhapatnam
7 yrs of
Exp
2 students
52 hrs of classes completed
500
per hour
Online Classes
Student's Home
Since from last seven years i am doing for 10, 11 and 12 th class chemistry students and i am efficient in doubt solving of students.
Very nice explanation of each chapter without any doubts and easy to understand all concepts and easy to solve questions.
Super Tutor
Jhilmil, Delhi
20 yrs of
Exp
4 students
191 hrs of classes completed
500
per hour
Online Classes
Student's Home
I have been teaching with excellent and guaranted results. Many of my students have become successful professionals.
Had a good experience with Mr. Rahul; he goes to great lengths to explain the concepts. I would also recommend him for other subjects.
Top Tutor
Kalyan East, Thane
8 yrs of
Exp
5 students
323 hrs of classes completed
800
per hour
Student's Home
Tutor's home
I am profressional in teaching class 12 mathematics since 8 years .Teaching multiple boards and produced excellent results in math.
Mr. Dubey is an excellent maths teacher who makes learning fun and challenging. He uses a variety of methods to explain concepts, such as diagrams, games, and real-life examples. He also encourages us to ask questions and participate in class discussions. Sometimes, the homework assignments are too long or difficult, and I wish we had more time to review them in class. I would also like to see more practice tests or quizzes to prepare for exams. Mr. Dubey is a dedicated and inspiring teacher who has helped me improve my maths skills and confidence. I am lucky to have him as my teacher.
Top Tutor
Maan, Pimpri-Chinchwad
10 yrs of
Exp
6 students
263 hrs of classes completed
1200
per hour
Online Classes
Student's Home
Tutor's home
I have been teaching students for the past 10 years and have guided many to students in getting excellent results, showcasing their best performance. Concept-based teaching and an extra emphasis on every student needs has helped me provide a quality teaching environment to my students.
Very nice teacher and little short tempered too. Had great knowledge of maths and chemistry. Thanks for teaching sir.
