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Human Reproduction MCQs for NEET — Zoology Questions with Answers

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NEET 2024

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Given below are two statements:

Statement I: The presence or absence of hymen is not a reliable indicator of virginity.

Statement II: The hymen is torn during the first coitus only.

In the light of the above statements, choose the correct answer from the options given below:

A. Statement I is false but Statement II is true. B. Both Statement I and Statement II are true. C. Both Statement I and Statement II are false. D. Statement I is true but Statement II is false.

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Explanation

The hymen may rupture due to a variety of activities (sport, riding, tampon use) — not only coitus, so Statement II is incorrect.

NEET 2024

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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: FSH acts upon ovarian follicles in female and Leydig cells in male.

Reason R: Growing ovarian follicles secrete estrogen in female while interstitial cells secrete androgen in male human being.

In the light of the above statements, choose the correct answer from the options given below:

A. A is false but R is true B. Both A and R are true and R is the correct explanation of A. C. Both A and R are true but R is NOT the correct explanation of A. D. A is true but R is false

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Explanation

In males FSH acts on Sertoli cells (not Leydig); LH acts on Leydig cells. So A is false. R is a true statement on its own.

NEET 2024

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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: Breast-feeding during initial period of infant growth is recommended by doctors for bringing a healthy baby.

Reason R: Colostrum contains several antibodies absolutely essential to develop resistance for the new born baby.

In the light of the above statements, choose the most appropriate answer from the options given below:

A. A is not correct but R is correct. B. Both A and R are correct and R is the correct explanation of A. C. Both A and R are correct but R is NOT the correct explanation of A. D. A is correct but R is not correct.

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Explanation

Colostrum is rich in IgA — passive immunity for the neonate; R explains the medical recommendation in A.

NEET 2024

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Identify the correct option (A), (B), (C), (D) with respect to spermatogenesis. (Flow: GnRH → LH (left arm) → (B) → Androgens; GnRH → (A) (right arm) → (C) → Factors → (D) = Formation of spermatids.)

A. ICSH, Leydig cells, Sertoli cells, spermatogenesis. B. FSH, Leydig cells, Sertoli cells, spermiogenesis. C. ICSH, Interstitial cells, Leydig cells, spermatogenesis. D. FSH, Sertoli cells, Leydig cells, spermatogenesis.

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Explanation

GnRH triggers LH and FSH (A). LH acts on Leydig (interstitial) cells (B) → androgens. FSH acts on Sertoli cells (C) → factors → spermiogenesis (D).

NEET 2025

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Match List - I with List - II:

List - I — A. Head, B. Middle piece, C. Acrosome, D. Tail

List - II — I. Enzymes, II. Sperm motility, III. Energy, IV. Genetic material

Choose the correct answer:

A. A-IV, B-III, C-I, D-II B. A-IV, B-III, C-II, D-I C. A-III, B-IV, C-II, D-I D. A-III, B-II, C-I, D-IV

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Explanation

Head → genetic material (IV); Middle piece (mitochondria) → energy (III); Acrosome → enzymes (I); Tail → sperm motility (II).

NEET 2025

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Find the correct statements: A. In human pregnancy, the major organ systems are formed at the end of 12 weeks. B. In human pregnancy, the major organ systems are formed at the end of 8 weeks. C. In human pregnancy heart is formed after one month of gestation. D. In human pregnancy, limbs and digits develop by the end of second month. E. In human pregnancy the appearance of hair is usually observed in the fifth month. Choose the correct answer:

A. A and E Only B. B and C Only C. B, C, D and E Only D. A, C, D and E Only

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Explanation

By the end of 12 weeks (first trimester) most major organ systems are formed (A). The heart forms in the first month (C); limbs and digits by the end of two months (D); body hair appears around the fifth month (E). B is wrong.

NEET 2025

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Consider the following: A. The reductive division for the human female gametogenesis starts earlier than that of the male gametogenesis. B. The gap between the first meiotic division and the second meiotic division is much shorter for males compared to females. C. The first polar body is associated with the formation of the primary oocyte. D. Luteinizing Hormone (LH) surge leads to disintegration of the endometrium and onset of menstrual bleeding. Choose the correct answer:

A. A and B are true B. A and C are true C. B and D are true D. B and C are true

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Explanation

In females meiosis begins during foetal life — earlier than in males (A true) — and is arrested for years, so the gap is far longer than in males (B true). The first polar body forms when the secondary oocyte is produced (C false); the LH surge triggers ovulation, not menstruation (D false).

NEET 2025

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The first menstruation is called:

A. Menopause B. Menarche C. Diapause D. Ovulation

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Explanation

The first menstruation at puberty is called menarche; cessation of menstruation in mid-life is menopause.

NEET 2025

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Twins are born to a family that lives next door to you. The twins are a boy and a girl. Which of the following must be true?

A. They are monozygotic twins. B. They are fraternal twins. C. They were conceived through in vitro fertilization. D. They have 75% identical genetic content.

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Explanation

A boy–girl pair cannot be identical (monozygotic) twins, so they must be fraternal (dizygotic) twins, formed from two separate eggs and sperm.

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