NEET Zoology - MCQ Practice Questions
Practice free NEET Zoology multiple-choice questions with detailed answers and explanations. Perfect for competitive exam preparation.
540 questions | 100% Free
What is the primary mechanism of action of levonorgestrel as an emergency contraceptive?
A 28-year-old female reports irregular menstrual cycles with excessive bleeding. Laboratory tests show elevated FSH and normal prolactin levels. What could be the likely diagnosis?
Which stage of spermatogenesis is most sensitive to radiation damage?
What is the correct chronological order of events during the menstrual cycle?
Which of the following STIs can be VERTICAL transmitted (from mother to child)?
A couple has been trying to conceive for 2 years without success. The male partner has normal semen analysis. What is the next appropriate investigation for the female partner?
Which hormone is essential for maintaining the corpus luteum during the first 8 weeks of pregnancy?
What is the primary advantage of Copper-T (Cu-IUD) over hormonal IUDs in terms of side effects?
A 32-year-old woman presents with amenorrhea and galactorrhea. Pregnancy test is negative. Which investigation would be MOST diagnostic?
During in vitro fertilization (IVF), what is the purpose of using GnRH agonists in the downregulation phase?
Which of the following is a characteristic feature of Polycystic Ovary Syndrome (PCOS)?
What is the recommended interval for cervical cancer screening using Pap smear in women aged 21-65 years with normal previous results?
A 26-year-old male presents with complaints of erectile dysfunction and reduced sperm count. Testosterone level is 2.5 ng/mL (normal: 3-10 ng/mL). What could be the underlying cause?
Which phase of the ovarian cycle is characterized by rising estrogen levels and endometrial proliferation?
What is the most common chromosomal abnormality in spontaneous miscarriages?
A woman using combined oral contraceptive pills reports breakthrough bleeding. Which factor is MOST likely responsible?
Which sexually transmitted infection is characterized by painless genital ulcers with indurated edges and a clean base?
During oogenesis, at which stage does the first meiotic division complete?
What is the mechanism of action of misoprostol when used for medical abortion in the first trimester?
Which hormone is primarily responsible for maintaining the corpus luteum during early pregnancy?