NEET Zoology - MCQ Practice Questions

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?

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

Which hormone is primarily responsible for initiating and maintaining spermatogenesis?

Which of the following contraceptive methods has the highest failure rate?

Which stage of oogenesis is arrested at the time of ovulation?

Which of the following STIs is most commonly associated with pelvic inflammatory disease (PID)?

A 29-year-old woman with regular 28-day cycles wants to use the rhythm method for contraception. Which days are considered the fertile window?

Which of the following is a copper-containing IUD approved for use in India with the longest duration of effectiveness?

Which of the following hormonal changes is MOST characteristic of the luteal phase of the menstrual cycle?