NEET 2025 MCQ with Answer Explanation : “Reproductive Health”.

41. Which of the following is a male contraceptive method?
    A. Diaphragm
    B. Copper IUD
    C. Vasectomy
    D. Oral contraceptive pills

Answer: C. Vasectomy

Explanation: A vasectomy is a permanent contraceptive method for males in which the vas deferens, the tubes that carry sperm, are cut and sealed. This prevents sperm from being released during ejaculation. Diaphragms and Copper IUDs are female methods, and oral contraceptive pills are also female hormonal methods.

42. Which of the following sexually transmitted infections (STIs) is caused by a protozoan parasite?
    A. Genital warts
    B. Trichomoniasis
    C. Gonorrhea
    D. HIV/AIDS

Answer: B. Trichomoniasis

Explanation: Trichomoniasis is caused by the protozoan parasite Trichomonas vaginalis. Genital warts are caused by the Human Papillomavirus (HPV), gonorrhea is caused by bacteria, and HIV/AIDS is caused by the Human Immunodeficiency Virus.

43. Which of the following is a method of natural contraception?
    A. Diaphragm
    B. Oral contraceptive pills
    C. Coitus interruptus
    D. Copper IUD

Answer: C. Coitus interruptus

Explanation: Coitus interruptus, or the “withdrawal method,” is a natural method of contraception where the male withdraws his penis before ejaculation, reducing the chances of sperm entering the vagina. However, it is less reliable compared to other methods like diaphragms, oral contraceptives, and IUDs.

44. Which of the following is used to detect abnormalities in a developing fetus?
    A. Amniocentesis
    B. IUD
    C. Intrauterine insemination
    D. Tubectomy

Answer: A. Amniocentesis

Explanation: Amniocentesis is a prenatal test used to detect chromosomal abnormalities (like Down syndrome) and genetic disorders in a developing fetus. It involves taking a sample of amniotic fluid from the uterus. IUDs and tubectomies are contraceptive methods, while intrauterine insemination is a fertility treatment.

45. What is the purpose of administering the HPV vaccine?
    A. To protect against gonorrhea
    B. To prevent genital herpes
    C. To protect against certain strains of Human Papillomavirus
    D. To prevent HIV/AIDS

Answer: C. To protect against certain strains of Human Papillomavirus

Explanation: The HPV vaccine protects against certain strains of the Human Papillomavirus (HPV), particularly those that can cause cervical cancer and genital warts. It does not protect against HIV, herpes, or gonorrhea.

46. Which of the following hormones stimulates the thickening of the endometrium during the menstrual cycle?
    A. Progesterone
    B. Estrogen
    C. FSH
    D. Oxytocin

Answer: B. Estrogen

Explanation: Estrogen stimulates the thickening of the endometrium (uterine lining) during the follicular phase of the menstrual cycle, preparing the uterus for potential implantation of a fertilized egg. Progesterone maintains the thickened lining after ovulation.

47. Which of the following diseases can lead to infertility if left untreated?
    A. Genital warts
    B. Gonorrhea
    C. Syphilis
    D. Trichomoniasis

Answer: B. Gonorrhea

Explanation: Gonorrhea, if left untreated, can cause serious complications, including pelvic inflammatory disease (PID), which can lead to infertility in women. It can also cause scarring of the reproductive organs in both men and women.

48. The rhythm method of contraception is based on:
    A. Surgical removal of the ovaries
    B. Monitoring the menstrual cycle and avoiding intercourse during fertile periods
    C. Using hormonal pills to prevent pregnancy
    D. Using a diaphragm to block sperm

Answer: B. Monitoring the menstrual cycle and avoiding intercourse during fertile periods

Explanation: The rhythm method is a natural contraception method that involves monitoring a woman’s menstrual cycle and avoiding intercourse during the fertile window, when ovulation is likely to occur. This reduces the chances of pregnancy without using physical or hormonal contraceptives.

49. What is the role of Follicle-Stimulating Hormone (FSH) in the female reproductive system?
    A. Stimulates ovulation
    B. Stimulates the development of ovarian follicles
    C. Causes thickening of the endometrium
    D. Prevents menstruation

Answer: B. Stimulates the development of ovarian follicles

Explanation: FSH (Follicle-Stimulating Hormone) is responsible for stimulating the growth and development of ovarian follicles during the early part of the menstrual cycle, which eventually leads to ovulation. LH (Luteinizing Hormone) triggers ovulation.

50. Which of the following can help reduce the risk of sexually transmitted infections (STIs)?
    A. Oral contraceptive pills
    B. Diaphragm
    C. Condom
    D. IUD

Answer: C. Condom

Explanation: Condoms are the most effective contraceptive method for reducing the risk of sexually transmitted infections (STIs) because they act as a physical barrier that prevents direct contact and the exchange of bodily fluids. Other contraceptive methods like diaphragms, IUDs, and pills do not protect against STIs.