What is the work of progesterone which is present in oral contraceptive pills:
- To inhibit ovulation
- To check oogenesis
- To check entry of sperms in to cervix to make them inactive
- To check sexual behaviour
The Correct Option is A
Solution and Explanation
Progesterone in oral contraceptive pills primarily works to inhibit ovulation, preventing the release of eggs from the ovaries. It does this by suppressing the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from the pituitary gland, which are essential for the ovulation process. Additionally, progesterone thickens cervical mucus, making it more difficult for sperm to reach and fertilize an egg. It also alters the uterine lining, making it less receptive to implantation, further preventing pregnancy.
So, the correct option is (A): To inhibit ovulation
Top Questions on Reproductive Health – Problems And Strategies
- List two reasons that make copper releasing IUDs as effective contraceptives.
- CBSE CLASS XII - 2025
- Biology
- Reproductive Health – Problems And Strategies
Student to attempt either option-(A) or (B):
(A) Study the given diagram showing the sectional view of a seminiferous tubule.
Answer the following questions:- [(i)] Label A, B, C and D in the figure.
- [(ii)] What will be the number of chromosomes in secondary spermatocyte and spermatid respectively?
- [(iii)] Explain the terms — Spermiogenesis and Spermiation.
OR
(B) Study the figures given below showing initial stages in the formation of female gametophyte and answer the questions that follow.
- [(i)] Identify (P) and (Q).
- [(ii)]
- [I.] What kind of division does cell (P) undergo to form (Q)?
- [II.] How many (Q) cells form the embryo sac? What is the name given to such kind of development?
- [III.] How many free nuclear mitotic divisions will the functional megaspore undergo to form the embryo sac?
- [IV.] Describe the structure of a mature female gametophyte.
- CBSE CLASS XII - 2025
- Biology
- Reproductive Health – Problems And Strategies
- A village health worker was taking a session with women. She tells them that one has to be careful while using oral pills as a method of birth control. Wrong usage can actually promote conception.
(A) Analyse the statement — oral pills need careful usage, as wrong usage can promote conception. Compare merits and demerits of using oral pills and surgical methods of birth control.
(B) Village women are confused as to how a thin metallic copper loop can prevent pregnancy. Explain the mode of action of IUDs. Give two points.- CBSE CLASS XII - 2025
- Biology
- Reproductive Health – Problems And Strategies
- Student to attempt either option (A) or (B):
(A) “A fully developed foetus initiates its delivery from the mother’s womb.” Explain.
OR
(B) Give reasons for the following:- Why can a woman generally not conceive a child after 50 years of age?
- Polar bodies are formed during oogenesis and not during spermatogenesis.
- CBSE CLASS XII - 2025
- Biology
- Reproductive Health – Problems And Strategies
- Pick up the hormone releasing intrauterine device.
- AP EAPCET - 2025
- Zoology
- Reproductive Health – Problems And Strategies
Questions Asked in NEET exam
The current passing through the battery in the given circuit, is:
- NEET (UG) - 2025
- Current electricity
A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :
- NEET (UG) - 2025
- Current electricity
- Two gases A and B are filled at the same pressure in separate cylinders with movable pistons of radii \(r_A\) and \(r_B\) respectively. On supplying an equal amount of heat to both the cylinders, their pressures remain constant and their pistons are displaced by 16 cm and 9 cm respectively. If the change in their internal energies is the same, then the ratio \(r_A / r_B\) is:
- NEET (UG) - 2025
- Thermodynamics
- Which of the following enzyme(s) are NOT essential for gene cloning?
A. Restriction enzymes
B. DNA ligase
C. DNA mutase
D. DNA recombinase
E. DNA polymerase- NEET (UG) - 2025
- Molecular Biology
- Which of the following organisms cannot fix nitrogen? A. Azotobacter
B. Oscillatoria
C. Anabaena
D. Volvox
E. Nostoc
Choose the correct answer from the options given below:- NEET (UG) - 2025
- Nitrogen Fixation
Concepts Used:
Reproductive Health
- The biological process by which a new individual or an offspring is produced from a parent or parents that are biologically similar or identical is known as reproduction. It is the elemental trait of all known forms of life. In fact, each and every individual have life because of reproduction.
- The state or position of male and female reproductive systems during their lifetime refers to their reproductive health. The system comprises organs and glands, including the pituitary gland in our brain, which are responsible for the production and release of hormones.
- In other words, reproductive health can be described as a state of physical, mental, and social well-being in all aspects relating to the reproductive system. It includes the liberation and appropriate capacity to reproduce as and when one decides to do so, apart from having a safe and satisfying sex life.
Read More: Reproductive Health