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Human Reproduction — NEET Biology MCQs

30 questions written by hand against the NCERT chapter. Every wrong option is explained, not just the right one.

30questions
10/14/6easy / medium / hard
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Sample questions from this chapter

A man's testes remain in the abdominal cavity rather than descending into the scrotum. Which process is most directly at risk?
  1. Spermatogenesis, because it requires a temperature about 2–2.5°C below core temperature ✓
  2. Androgen transport, because Leydig cells function only outside the body
  3. Urine formation, because testes regulate renal temperature
  4. Seminal fructose production, because seminal vesicles lie in the scrotum
Answer: A. The scrotum keeps testes cooler than the abdomen, a requirement for normal sperm production. Hormone production may persist better than the temperature-sensitive seminiferous epithelium.
Why not B: Leydig cells can secrete androgens, but elevated temperature primarily compromises germ-cell development.
Why not C: Kidneys rather than testes form urine and are normally abdominal.
Why not D: Seminal vesicles lie in the pelvis and contribute fructose independently of scrotal location.
A pituitary lesion abolishes LH but preserves FSH in a pubertal male. Which chain is disrupted most directly?
  1. Sertoli stimulation → acrosome formation
  2. GnRH production → FSH release
  3. Leydig stimulation → androgen secretion → support of spermatogenesis ✓
  4. Epididymal secretion → sperm transport
Answer: C. LH stimulates interstitial Leydig cells to produce androgens, which support spermatogenesis. FSH can still act on Sertoli cells, but one hormonal arm is missing.
Why not A: FSH rather than LH acts directly on Sertoli cells.
Why not B: GnRH comes from hypothalamus and is upstream of pituitary damage.
Why not D: Accessory-duct secretion is androgen-supported but is not the direct LH target step.
A woman on day 21 has high progesterone. Implantation then occurs and trophoblast begins hormonal signalling. Which endocrine transition best sustains the uterus?
  1. hCG supports luteal progesterone while placenta progressively assumes pregnancy endocrine functions ✓
  2. LH surge repeats daily to re-ovulate the implanted embryo
  3. FSH destroys corpus luteum and initiates menstruation
  4. Prolactin replaces progesterone as the direct endometrial-maintenance hormone
Answer: A. The luteal endometrium is already progesterone-supported; embryonic hCG preserves that support until placenta supplies abundant progestogens and estrogens. Pregnancy extends rather than restarts the luteal programme.
Why not B: Ovulation has passed, and pregnancy suppresses further menstrual cycling.
Why not C: Implantation prevents the luteal collapse and menstruation expected in a non-pregnant cycle.
Why not D: Prolactin supports lactation; progesterone and placental signals maintain pregnancy endometrium.

These are 3 of the 30 questions in the test. Take the full chapter test →

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Every NCERT question in this chapter is solved, free: NCERT solutions — Human Reproduction →

Other NEET Biology chapters

The Living WorldBiological ClassificationPlant KingdomAnimal KingdomMorphology of Flowering PlantsAnatomy of Flowering Plants

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Questions

How many NEET questions are there on Human Reproduction?

This chapter test has 30 questions — 10 easy, 14 medium and 6 hard — all written against the NCERT Class 12 chapter.

Is this NEET Biology chapter test free?

Yes. Every chapter test is free with no login. The only paid thing on the site is the full-length 90-question Biology mock and its all-India rank.

Do the questions explain the wrong options?

Yes — every distractor carries its own explanation naming the specific misconception that makes a student pick it. That is the part most question banks skip, and it is the part that changes your next attempt.