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Home/ Education/ Exam/ NEET/ Biology/NEET 2025 MCQ with Answer Explanation : “Reproductive Health”.

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On: October 4, 2024 Posted in Biology, Education, Exam, NEET Comments: 0 Views: 247

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

  1. What is the main role of progesterone in the menstrual cycle?
    A. Stimulates ovulation
    B. Thickens the endometrial lining
    C. Stimulates the production of eggs
    D. Promotes menstruation

Answer: B. Thickens the endometrial lining

Explanation: Progesterone plays a critical role in the menstrual cycle by thickening the endometrial lining of the uterus, preparing it for the implantation of a fertilized egg. If fertilization does not occur, progesterone levels drop, leading to menstruation.

  1. Which assisted reproductive technology (ART) procedure involves directly transferring a fertilized egg into the fallopian tube?
    A. IVF
    B. ICSI
    C. ZIFT
    D. GIFT

Answer: C. Zygote Intrafallopian Transfer (ZIFT)

Explanation: Zygote Intrafallopian Transfer (ZIFT) is an ART procedure in which a fertilized egg (zygote) is transferred directly into the fallopian tube. This is different from IVF, where the embryo is placed in the uterus.

  1. Which of the following infections is known to cause cervical cancer?
    A. Gonorrhea
    B. Human Papillomavirus (HPV)
    C. HIV
    D. Herpes simplex virus

Answer: B. Human Papillomavirus (HPV)

Explanation: Human Papillomavirus (HPV), particularly certain high-risk strains, is strongly linked to the development of cervical cancer. Vaccination against HPV can significantly reduce the risk of cervical cancer.

  1. Which hormone triggers the thickening of the cervical mucus to prevent sperm entry during pregnancy?
    A. Estrogen
    B. Oxytocin
    C. Progesterone
    D. Luteinizing Hormone (LH)

Answer: C. Progesterone

Explanation: During pregnancy, progesterone helps maintain a thickened cervical mucus, which acts as a barrier to prevent sperm and bacteria from entering the uterus. This protects the developing fetus.

  1. Which assisted reproductive technology (ART) involves the direct injection of sperm into the egg to overcome male infertility issues?
    A. IVF
    B. ICSI
    C. GIFT
    D. ZIFT

Answer: B. Intracytoplasmic Sperm Injection (ICSI)

Explanation: Intracytoplasmic Sperm Injection (ICSI) is an ART method where a single sperm is directly injected into an egg to assist in fertilization. This is often used in cases of severe male infertility.

  1. What is the main risk associated with untreated pelvic inflammatory disease (PID)?
    A. Infertility
    B. Weight gain
    C. Hair loss
    D. High blood pressure

Answer: A. Infertility

Explanation: Pelvic inflammatory disease (PID), if left untreated, can lead to serious complications, including infertility, due to scarring of the fallopian tubes and other reproductive organs.

  1. What is the primary mechanism of action of a copper IUD?
    A. Prevents ovulation
    B. Blocks sperm from entering the uterus
    C. Releases copper ions that kill sperm
    D. Thickens cervical mucus

Answer: C. Releases copper ions that kill sperm

Explanation: The copper IUD works primarily by releasing copper ions, which are toxic to sperm, preventing fertilization. It also creates an inflammatory response in the uterus that makes it inhospitable for implantation.

  1. Which of the following sexually transmitted infections (STIs) is not curable?
    A. Syphilis
    B. Gonorrhea
    C. Chlamydia
    D. Herpes

Answer: D. Herpes

Explanation: Herpes is caused by the herpes simplex virus (HSV) and is not curable, though it can be managed with antiviral medications. In contrast, bacterial STIs like syphilis, gonorrhea, and chlamydia are curable with antibiotics.

  1. Which method of contraception works by preventing the sperm from meeting the egg by creating a physical barrier?
    A. Diaphragm
    B. Oral contraceptive pills
    C. IUD
    D. Hormonal patch

Answer: A. Diaphragm

Explanation: The diaphragm is a barrier method of contraception that is inserted into the vagina and covers the cervix, physically blocking sperm from reaching the egg.

  1. What is the main purpose of the hormone luteinizing hormone (LH) in the female reproductive system?
    A. Prevents menstruation
    B. Triggers ovulation
    C. Thickens the endometrium
    D. Stimulates milk production

Answer: B. Triggers ovulation

Explanation: Luteinizing hormone (LH) plays a critical role in the female reproductive system by triggering ovulation, the release of a mature egg from the ovary. This LH surge occurs mid-cycle during the menstrual cycle.

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