NEET Zoology - MCQ Practice Questions

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

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?

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?

Which of the following is a biotic component of an ecosystem?

What is the primary source of energy in most ecosystems?

Which type of succession occurs on a newly formed volcanic island?

Which gas is primarily responsible for the greenhouse effect in the atmosphere?

What is the process by which plants release water vapor through their leaves?

Which of the following is NOT a renewable resource?

In a pond ecosystem, phytoplankton occupy which trophic level?