NEET Zoology — MCQ Practice Questions & Answers

Question 1

What is the role of GnRH in reproductive health?

Accepted Answer

Correct answer: B. Stimulates pituitary to release FSH and LH — GnRH (Gonadotropin-Releasing Hormone) from the hypothalamus stimulates the anterior pituitary to release FSH and LH, initiating the reproductive cycle.

Answer

A. Stimulates growth of secondary sexual characters

Answer

C. Inhibits ovulation

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D. Maintains pregnancy

Question 2

In females, the LH surge causes:

Accepted Answer

Correct answer: B. Ovulation — The LH (Luteinizing Hormone) surge triggers ovulation, the release of a mature ovum from the ovary, typically occurring around day 14 of the menstrual cycle.

Answer

A. Follicle development

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C. Menstruation

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D. Corpus luteum degeneration

Question 3

Which contraceptive method has the highest efficacy rate in India as per 2024 guidelines?

Accepted Answer

Correct answer: B. Copper T (99.2%) — Copper T IUD has the highest efficacy rate at 99.2%, making it one of the most reliable contraceptive methods available in India.

Answer

A. Condoms (85-98%)

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C. Oral pills (91-99%)

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D. Calendar method (80%)

Question 4

What is the primary cause of infertility in males in India?

Accepted Answer

Correct answer: B. Low sperm count (oligospermia) and poor motility — Oligospermia (low sperm count) and asthenozoospermia (poor motility) are the major causes of male infertility, often due to lifestyle factors, infections, or genetic issues.

Answer

A. Erectile dysfunction

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C. Hormonal imbalance only

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D. Psychological factors

Question 5

A 25-year-old woman has irregular menstrual cycles with heavy bleeding. What could be a likely cause?

Accepted Answer

Correct answer: A. PCOS (Polycystic Ovary Syndrome) — PCOS is characterized by irregular cycles, heavy bleeding, and hormonal imbalances. It's a common cause of menstrual irregularities in reproductive-age women.

Answer

B. Perfect ovulation

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C. Normal hormonal balance

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D. Pregnancy

Question 6

Which of the following is a natural method of family planning?

Accepted Answer

Correct answer: B. Ovulation method (Billings method) — The Billings ovulation method is a natural family planning technique based on observing changes in cervical mucus to identify fertile days.

Answer

A. Tubal ligation

Answer

C. IUD insertion

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D. Hormonal implants

Question 7

What is the significance of hCG (human Chorionic Gonadotropin) in pregnancy?

Accepted Answer

Correct answer: A. It maintains the corpus luteum to produce progesterone — hCG, produced by the trophoblast after implantation, maintains the corpus luteum, ensuring continued progesterone production essential for pregnancy maintenance.

Answer

B. It stimulates ovulation

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C. It causes menstruation

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D. It develops secondary sexual characters

Question 8

During which phase of the menstrual cycle are FSH levels highest?

Accepted Answer

Correct answer: C. Follicular phase — FSH levels peak during the follicular phase, stimulating follicle development and estrogen production. Levels decline after ovulation.

Answer

A. Luteal phase

Answer

B. Menstruation

Answer

D. Post-ovulation

NEET Zoology - MCQ Practice Questions