NEET Zoology - MCQ Practice Questions

A couple seeks fertility treatment after 3 years of unprotected intercourse without conception. Which investigation should be done first in the female partner?

Which of the following contraceptive methods has the lowest failure rate in typical use?

During embryonic development, the notochord is primarily derived from which germ layer?

Which sexually transmitted infection is caused by a protozoan parasite and commonly presents with frothy discharge?

A 32-year-old woman presents with secondary infertility and dysmenorrhea. Imaging shows thickened endometrial tissue outside the uterus. What is the most likely diagnosis?

Which of the following conditions is associated with increased risk of gestational diabetes mellitus?

During meiosis II, separation of which structures occurs?

A 28-year-old male presents with azoospermia and is found to have a 47,XXY karyotype. What is this chromosomal abnormality called?

Which vitamin supplementation is crucial in the periconceptional period to reduce neural tube defects?

In a typical 28-day menstrual cycle, ovulation occurs approximately on which day?

A pregnant woman presents with vaginal bleeding in the first trimester and a positive pregnancy test. Pelvic ultrasound shows an empty uterus. What is the most likely diagnosis?

Which of the following is the mechanism of action of levonorgestrel as an emergency contraceptive?

A 24-year-old woman with irregular cycles is diagnosed with polycystic ovary syndrome. Which hormonal finding is most characteristic?

Which statement about human milk lactation is correct?

A 35-year-old woman with three previous cesarean deliveries presents with vaginal bleeding at 32 weeks. What is the most likely diagnosis?

Which of the following pathogens is the leading cause of congenital infections in the TORCH group?

During spermatogenesis, which cell type directly gives rise to mature spermatozoa?

A couple has been trying to conceive for 2 years without success. The male partner has normal semen parameters, but the female partner has elevated FSH levels. What does this indicate?

Which of the following intrauterine devices (IUDs) releases hormones to prevent pregnancy?

A 40-year-old man presents with erectile dysfunction and is found to have low testosterone levels. Which of the following hormones directly stimulates testosterone production in Leydig cells?