30+ CUET Biology Human Reproduction PYQs with Answers & Detailed Explanations

Overview: Practice the most important 30+ CUET Biology Human Reproduction PYQs (2022–2025) with correct answers, easy explanations, topic-wise breakdown, and expert tips to score 100% from this chapter in CUET 2027.

The CUET Biology section tests 50 questions from the Class 12 NCERT syllabus, out of which you need to attempt any 40.

Human Reproduction typically contributes 4 to 6 questions in every CUET paper, which is up to 30 marks you can secure from a single chapter if you prepare smartly. 

With questions spanning the male and female reproductive systems, the menstrual cycle, hormonal regulation, gametogenesis, fertilisation, embryonic development, and parturition, this chapter covers a wide yet well-defined range of concepts.

Download Free Study Material for CUET 2027 by Supergrads

Quick Overview: CUET Biology Human Reproduction PYQ

Exam Name	Common University Entrance Test (CUET UG) 2027
Conducting Body	National Testing Agency (NTA)
Exam Dates	May- June, 2027
Subject	Biology (Section II – Domain Subjects)
Chapter Covered	Human Reproduction (Chapter 3 – Reproduction in Organisms)
Class	12th NCERT Biology
Question Type	MCQ (4 options, 1 correct)
Total Biology Questions	50 (Attempt any 40)
Marking Scheme	+5 per correct, −1 per wrong
Approx. Weightage of Human Reproduction	4–6 questions (8–12% of Biology section)
Difficulty Level	Easy to Moderate
Mode of Exam	Computer-Based Test (CBT)

Table of Contents 

1. What is the Weightage of Human Reproduction in CUET Biology?
2. 30+ CUET Biology Human Reproduction PYQs with solutions 
3. Why Is Human Reproduction So Important for CUET Biology?
4. What Is the Exam Pattern for CUET Biology 2027?
5. What Is the Syllabus of Human Reproduction in CUET Biology?
6. What Are the Most Repeated Topics from Human Reproduction in CUET?
7. How to Prepare Human Reproduction for CUET Biology 2027?
8. Conclusion

What is the Weightage of Human Reproduction in CUET Biology 2027?

Based on CUET exam analysis from 2022 to 2025, Human Reproduction consistently ranks among the most frequently asked topics in CUET Biology. Here is the year-wise breakup:

Year	Approx. Questions from Human Reproduction	Key Sub-Topics Covered	Difficulty
CUET 2022	4–5 questions	Spermatogenesis, Menstrual Cycle, Fertilisation	Moderate
CUET 2023	4–5 questions	Embryo Development, Hormones, Corpus Luteum	Easy-Moderate
CUET 2024	5–6 questions	Male Reproductive System, Oogenesis, Implantation	Moderate
CUET 2025	4–5 questions	Hormonal Control, Placenta, Sex Determination	Easy-Moderate

Take Free CUET Mock Test and Analyse your Preformance

Sub-topic-wise question distribution (based on all PYQs 2022–2025):

Sub-Topic	No. of Questions (approx.)	Importance
Male Reproductive System	3–4	High
Female Reproductive System	3–4	High
Menstrual Cycle & Hormones (LH, FSH, Estrogen, Progesterone)	4–5	Very High
Gametogenesis (Spermatogenesis & Oogenesis)	3–4	High
Fertilisation & Embryo Development	3–4	High
Corpus Luteum & Implantation	2–3	Medium
Pregnancy, Parturition & Lactation	2–3	Medium
Sex Determination	1–2	Medium

30+ CUET Biology Human Reproduction PYQs with solutions 

Below are 30+ actual and model-based PYQs from CUET Biology exams (2022–2025) on Human Reproduction. Each question includes options and a clear, student-friendly explanation.

Before you begin, check out:

• CUET Biology Notes – Chapter-Wise Free Notes
• CUET Biology Important Questions 2027

Q.1 Androgens are primarily secreted by which of the following cells?

• (A) Sertoli cells
• (B) Leydig cells (Interstitial cells)
• (C) Spermatogonia
• (D) Follicular cells

✅ Correct Answer: (B) Leydig cells (Interstitial cells) 

Explanation: Leydig cells (also called interstitial cells) are located between the seminiferous tubules in the testes. They secrete androgens, primarily testosterone, which is responsible for the development of male secondary sexual characteristics and the regulation of spermatogenesis. Sertoli cells (nurse cells) support sperm development, not androgen secretion.

Q.2 Sex in human embryos is determined by:

• (A) 'X' chromosome of the egg
• (B) 'X' or 'Y' chromosome of the sperm
• (C) Only 'Y' chromosome of the sperm
• (D) Health of the mother

✅ Correct Answer: (B) 'X' or 'Y' chromosome of the sperm

Explanation: All eggs carry only the X chromosome. Sperms carry either X or Y chromosomes. If a sperm carrying Y fertilises the egg → XY (male baby). If a sperm carrying X fertilises the egg → XX (female baby). Therefore, it is the father's sperm that determines the sex of the baby, NOT the mother.

Start CUET 2027 Prep Commerce Stream: Early Register Before It’s Full

Q.3 Which hormone is secreted by the corpus luteum during pregnancy?

• (A) Estrogen only
• (B) Progesterone only
• (C) Progesterone and Relaxin
• (D) Testosterone

✅ Correct Answer: (C) Progesterone and Relaxin 

Explanation: During pregnancy, the corpus luteum (formed from the ruptured Graafian follicle after ovulation) secretes both progesterone and relaxin. Progesterone maintains the uterine lining and supports early pregnancy. Relaxin relaxes the pelvic ligaments and softens the cervix to prepare for childbirth. After the first trimester, the placenta takes over progesterone production.

Q.4 The corpus luteum mainly secretes which of the following hormones? (CUET 2024)

• (A) Testosterone
• (B) Progesterone
• (C) FSH
• (D) LH

✅ Correct Answer: (B) Progesterone 

Explanation: After ovulation, the Graafian follicle transforms into the corpus luteum (yellow body). Its primary hormone is progesterone, which prepares the endometrium for implantation. If fertilisation does not occur, the corpus luteum degenerates → progesterone drops → menstruation begins.

Q.5 Arrange the following ducts of the male reproductive system in the correct order starting from the seminiferous tubules:

(A) Vas deferens (B) Vasa efferentia (C) Rete testis (D) Epididymis

• (A) A → B → C → D
• (B) B → C → D → A
• (C) D → A → B → C
• (D) C → B → D → A

✅ Correct Answer: (D) C → B → D → A (Rete testis → Vasa efferentia → Epididymis → Vas deferens)

Explanation: The correct pathway of sperm from the seminiferous tubules is: Seminiferous tubules → Rete testis → Vasa efferentia → Epididymis (where sperm mature) → Vas deferens (carries sperm to the urethra) → Ejaculatory duct → Urethra. Remember this with the mnemonic: "Sperms Really Visit Epididymis Very Devotedly".

Q.6 Which hormone is mainly responsible for maintaining the endometrium after ovulation?

• (A) Estrogen
• (B) Progesterone
• (C) Oxytocin
• (D) Relaxin

✅ Correct Answer: (B) Progesterone 

Explanation: After ovulation, the corpus luteum produces progesterone. Progesterone is the key hormone that maintains and thickens the endometrium (uterine lining) to prepare it for the implantation of a fertilised egg. If pregnancy doesn't occur, the corpus luteum degenerates, progesterone falls, and the endometrium sheds, causing menstruation.

Q.7 Arrange the following events of human embryo development in the correct sequence:

(A) Blastocyst formation (B) Implantation (C) Formation of morula (D) Cleavage in zygote

• (A) C → D → B → A
• (B) D → C → A → B
• (C) D → B → C → A
• (D) A → C → D → B

✅ Correct Answer: (B) D → C → A → B

Explanation: The correct sequence of embryo development: Zygote → Cleavage (mitotic divisions) → Morula (16-cell solid ball) → Blastocyst (hollow structure with inner cell mass) → Implantation in the endometrium. Remember: "Zygote Clearly Makes Blastocyst Implant".

Q.8 Match List-I (Hormones) with List-II (Functions):

A – LH, B – FSH, C – Oxytocin, D – Progesterone

I – Uterine contractions, II – Maintains endometrium, III – Acts on Leydig cells (androgen synthesis), IV – Acts on Sertoli cells (spermiogenesis)

• (A) A-I, B-II, C-III, D-IV
• (B) A-III, B-I, C-II, D-IV
• (C) A-III, B-IV, C-I, D-II
• (D) A-IV, B-III, C-I, D-II

✅ Correct Answer: (C) A-III, B-IV, C-I, D-II 

Explanation: LH (Luteinizing Hormone) → Stimulates Leydig cells → Androgen/Testosterone secretion. FSH (Follicle Stimulating Hormone) → Acts on Sertoli cells → Helps in spermiogenesis. Oxytocin → Causes stronger uterine contractions during parturition. Progesterone → Maintains endometrium during the menstrual cycle and pregnancy.

Q.9 Which of the following is the correct order of events during spermatogenesis?

• (A) Spermatocyte → Spermatogonium → Spermatid → Spermatozoa
• (B) Spermatogonium → Spermatocyte → Spermatid → Spermatozoa
• (C) Spermatogonium → Spermatid → Spermatocyte → Spermatozoa
• (D) Spermatogonium → Spermatozoa → Spermatid → Spermatocyte

✅ Correct Answer: (B) Spermatogonium → Spermatocyte → Spermatid → Spermatozoa 

Explanation: Spermatogenesis occurs in the seminiferous tubules. Spermatogonia (2n) undergo mitosis → Primary spermatocytes (2n) → Meiosis I → Secondary spermatocytes (n) → Meiosis II → Spermatids (n) → Spermiogenesis → Mature spermatozoa (n). Each spermatogonium ultimately produces 4 spermatozoa.

Start CUET 2027 Prep Humanities Stream: Early Register Before It’s Full!

Q.10 The site of fertilisation in females is:

• (A) Uterus
• (B) Ovary
• (C) Ampulla of the fallopian tube
• (D) Cervix

✅ Correct Answer: (C) Ampulla of the fallopian tube 

Explanation: Fertilisation in humans occurs in the ampullary region of the fallopian tube (oviduct). After ovulation, the secondary oocyte moves into the fallopian tube. Sperm that enters the female reproductive tract travels up to the fallopian tube, where it meets and fertilises the egg in the ampulla. The resulting zygote then moves towards the uterus for implantation.

Q.11 The acrosome of sperm is derived from:

• (A) Mitochondria
• (B) Nucleus
• (C) Golgi complex
• (D) Endoplasmic Reticulum

✅ Correct Answer: (C) Golgi complex

Explanation: The acrosome is a cap-like structure on the head of the sperm. It is derived from the Golgi complex (Golgi apparatus) and contains hydrolytic enzymes (e.g., hyaluronidase, acrosin). These enzymes help the sperm penetrate the zona pellucida of the egg during fertilisation, which is called the acrosomal reaction.

Q.12 Sperm motility is provided by energy from:

• (A) Nucleus
• (B) Mitochondria in the middle piece
• (C) Acrosome
• (D) Flagellum alone

✅ Correct Answer: (B) Mitochondria in the middle piece 

Explanation: The middle piece of the sperm is packed with mitochondria arranged in a spiral (helix) around the axoneme. These mitochondria provide the energy (ATP) needed for sperm motility helping the sperm swim through the female reproductive tract to reach the egg. That's why the middle piece is called the "powerhouse of sperm."

Q.13 After ovulation, the Graafian follicle transforms into:

• (A) Corpus albicans
• (B) Corpus luteum
• (C) Primary follicle
• (D) Antrum

✅ Correct Answer: (B) Corpus luteum 

Explanation: After the mature Graafian follicle releases its egg (ovulation), the empty follicle collapses and transforms into a yellow glandular structure called the corpus luteum ("yellow body"). It secretes progesterone and some estrogen. If pregnancy doesn't occur, it degenerates into corpus albicans (white scar tissue).

Q.14 The implantation of the blastocyst occurs in which part of the uterus?

• (A) Myometrium
• (B) Endometrium
• (C) Perimetrium
• (D) Cervix

✅ Correct Answer: (B) Endometrium

Explanation: The blastocyst implants in the endometrium the inner mucous lining of the uterus. The endometrium becomes thickened and rich in blood vessels under the influence of progesterone to prepare for implantation. The trophoblast cells of the blastocyst attach to the endometrium and burrow into it, establishing the early placental connection.

Q.15 Human chorionic gonadotropin (hCG) is secreted by:

• (A) Corpus luteum
• (B) Anterior pituitary
• (C) Trophoblast of the implanted embryo / Placenta
• (D) Ovaries

✅ Correct Answer: (C) Trophoblast of the implanted embryo / Placenta 

Explanation: The hCG (human chorionic gonadotropin) is secreted by the trophoblast cells of the embryo soon after implantation, and later by the placenta. It maintains the corpus luteum during early pregnancy, which in turn continues to produce progesterone. hCG is the hormone detected in pregnancy test kits its presence in urine or blood confirms pregnancy.

Q.16 Which of the following is NOT a function of the placenta?

• (A) Exchange of nutrients between mother and foetus
• (B) Secretion of progesterone and estrogen
• (C) Production of sperm and eggs
• (D) Acting as a barrier against some harmful substances

✅ Correct Answer: (C) Production of sperm and eggs 

Explanation: The placenta performs many important functions: it allows exchange of nutrients, oxygen, and waste between mother and foetus; secretes hormones like progesterone, estrogen, hCG, and hPL; acts as a partial barrier. It does NOT produce gametes (sperm or eggs); that is the function of the gonads (testes and ovaries).

Q.17 How many functional eggs are produced from one primary oocyte during oogenesis?

• (A) 4 functional eggs
• (B) 1 functional egg and 3 polar bodies
• (C) 2 functional eggs
• (D) 3 functional eggs and 1 polar body

✅ Correct Answer: (B) 1 functional egg and 3 polar bodies

Explanation:  In oogenesis, one primary oocyte (2n) undergoes Meiosis I → 1 secondary oocyte + 1 first polar body. Meiosis II → 1 oocyte + 1 second polar body. The first polar body may divide again → 2 polar bodies. Final result: 1 functional egg (ovum) + 3 polar bodies. This is unlike spermatogenesis, where 1 primary spermatocyte gives 4 functional spermatozoa.

Q.18 The menstrual cycle in females is regulated primarily by:

• (A) Thyroid hormones
• (B) Pituitary gonadotropins (FSH and LH) and ovarian hormones (Estrogen and Progesterone)
• (C) Androgens from the adrenal glands
• (D) Insulin

✅ Correct Answer: (B) FSH, LH, Estrogen, and Progesterone

Explanation:  The 28-day menstrual cycle is regulated by a hormonal interplay. FSH (from pituitary) stimulates follicle growth → rising Estrogen. A surge of LH triggers ovulation (day 14). Post-ovulation corpus luteum produces Progesterone → maintains endometrium. If no fertilisation → corpus luteum degenerates → both drop → menstruation occurs.

Grab the Best CUET 2027 Books and Study Material Here

Q.19 Which of the following correctly describes the function of Sertoli cells?

• (A) Secrete androgens/testosterone
• (B) Provide nutrition to developing sperms; respond to FSH
• (C) Produce female sex hormones
• (D) Produce secondary oocytes

✅ Correct Answer: (B) Provide nutrition to developing sperms; respond to FSH 

Explanation: Sertoli cells (also called nurse cells) line the seminiferous tubules and provide nutrition, protection, and support to developing sperms. FSH from the pituitary gland acts on Sertoli cells to stimulate spermiogenesis (maturation of spermatids into spermatozoa). They also secrete inhibin, which provides negative feedback to regulate FSH levels.

Q.20 Parturition (childbirth) is triggered primarily by:

• (A) Decrease in progesterone only
• (B) Increase in FSH
• (C) Foetal signals and oxytocin from the pituitary
• (D) Decrease in LH

✅ Correct Answer: (C) Foetal signals and oxytocin from the pituitary 

Explanation: Parturition is initiated by signals from the fully developed foetus and the placenta. These signals trigger mild uterine contractions → the pituitary releases oxytocin → stronger uterine contractions → more oxytocin (positive feedback loop) → delivery of baby. Relaxin (from the corpus luteum) also helps by relaxing pelvic ligaments. This process is called Ferguson's reflex.

Q.21 In humans, the foetal membranes include:

Choose the correct combination from below:

(A) Amniotic membrane, (B) Chorion, (C) Allantois, (D) Yolk sac

• (A) A and B only
• (B) B and C only
• (C) A, B and D only
• (D) A, B, C and D

✅ Correct Answer: (D) A, B, C and D (Amnion, Chorion, Allantois, and Yolk sac) 

Explanation: All four are extraembryonic membranes in humans. Amnion → forms the amniotic sac filled with amniotic fluid (protects the foetus). Chorion → outermost membrane; forms the foetal part of the placenta. Allantois → forms part of the umbilical cord. Yolk sac → site of early blood cell formation (haematopoiesis) in the embryo.

Q.22 The primary follicle in the ovary consists of:

• (A) Secondary oocyte surrounded by granulosa cells
• (B) Primary oocyte surrounded by single layer of granulosa cells
• (C) Secondary oocyte surrounded by zona pellucida
• (D) Oogonium surrounded by two layers of follicular cells

✅ Correct Answer: (B) Primary oocyte surrounded by a single layer of granulosa cells 

Explanation: A primary follicle contains a primary oocyte (in meiosis I arrest) surrounded by a single layer of granulosa cells. As it matures: Graafian follicle → antrum develops → layers of granulosa cells increase → zona pellucida forms. At ovulation, the secondary oocyte (arrested in meiosis II) is released along with the first polar body.

Q.23 Which accessory gland of the male reproductive system provides fructose as an energy source for sperms?

• (A) Prostate gland
• (B) Bulbourethral gland
• (C) Seminal vesicle
• (D) Cowper's gland

✅ Correct Answer: (C) Seminal vesicle

Explanation: Seminal vesicles secrete a fluid rich in fructose, which serves as the primary energy source for sperm motility. They also secrete prostaglandins and proteins. Prostate gland secretes an alkaline fluid that activates sperm. Bulbourethral (Cowper's) glands secrete a clear lubricating fluid that neutralises the acidic urine residue in the urethra before ejaculation.

Q.24 Ovulation in humans is triggered by a surge in which hormone?

• (A) FSH surge
• (B) LH surge (mid-cycle)
• (C) Progesterone surge
• (D) Estrogen surge only

✅ Correct Answer: (B) LH surge (mid-cycle) Ovulation occurs around day 14 of a 28-day menstrual cycle and is triggered by a sudden, sharp rise in LH (Luteinizing Hormone) called the LH surge. This surge is in response to high estrogen levels from the mature Graafian follicle. The LH surge causes the Graafian follicle to rupture and release the secondary oocyte. Remember: LH = Let it go (ovulation trigger)!

Q.25 The testes in humans are located outside the abdominal cavity in the scrotum. This is because spermatogenesis requires a temperature:

• (A) Higher than body temperature
• (B) 2–2.5°C lower than body temperature
• (C) Equal to body temperature
• (D) 5°C lower than body temperature

✅ Correct Answer: (B) 2–2.5°C lower than body temperature 

Explanation: Spermatogenesis requires a slightly lower temperature than the normal body temperature (37°C). That is why the testes are placed outside the body in the scrotal sac, which maintains a temperature approximately 2–2.5°C cooler than core body temperature. Cryptorchidism (undescended testes inside the abdomen) leads to infertility due to this temperature difference.

Q.26 Zona pellucida is a feature of:

• (A) Primary follicle
• (B) Graafian follicle (secondary oocyte)
• (C) Oogonium
• (D) Corpus luteum

✅ Correct Answer: (B) Graafian follicle (secondary oocyte) 

Explanation: The zona pellucida is a glycoprotein layer that surrounds the secondary oocyte inside the Graafian follicle. It acts as a physical barrier during fertilisation the sperm must penetrate it using acrosomal enzymes to fertilise the egg. After fertilisation, the zona pellucida prevents polyspermy (entry of more than one sperm).

Q.27: Which of the following statements about the menstrual phase is CORRECT?

• (A) Estrogen and Progesterone levels are at their peak
• (B) The Graafian follicle is forming
• (C) The endometrium breaks down due to low levels of estrogen and progesterone
• (D) LH surge triggers the menstrual phase

✅ Correct Answer: (C) The endometrium breaks down due to low levels of estrogen and progesterone 

Explanation: The menstrual phase (days 1–5) begins when the corpus luteum degenerates (if no fertilisation occurs), causing a sharp fall in progesterone and estrogen levels. This withdrawal of hormonal support causes the endometrium to break down and shed resulting in menstrual bleeding (menses). The menstrual phase marks the start of a new cycle.

Q.28: During capacitation, sperms:

• (A) Undergo spermiogenesis
• (B) Are formed from spermatids
• (C) Acquire the ability to fertilise an egg while travelling through the female reproductive tract
• (D) Reach the ovary directly

✅ Correct Answer: (C) Acquire the ability to fertilise an egg while travelling through the female reproductive tract 

Explanation: Capacitation is the process by which spermatozoa acquire the capacity to fertilise the egg. It occurs as the sperm travels through the female reproductive tract (primarily in the uterus and fallopian tubes). During capacitation, the sperm membrane changes, its motility increases (hyperactivated motility), and it becomes able to undergo the acrosomal reaction for fertilisation.

 

Q.29: The inner cell mass (embryoblast) of the blastocyst eventually develops into:

• (A) Placenta
• (B) Amniotic sac
• (C) The embryo proper (foetus)
• (D) Trophoblast

✅ Correct Answer: (C) The embryo proper (foetus)

Explanation: The blastocyst has two parts: the inner cell mass (ICM/embryoblast) and the trophoblast. The ICM develops into the actual embryo/foetus. The trophoblast forms the outer layer and develops into the placenta and chorion (foetal side). This is why embryonic stem cells derived from the ICM are pluripotent (can develop into any cell type of the body).

Practice with Free PYPs for CUET Exam Now!

Q.30 Lactation (milk production) after childbirth is primarily stimulated by:

• (A) Estrogen
• (B) Oxytocin alone
• (C) Prolactin (from anterior pituitary)
• (D) Progesterone

✅ Correct Answer: (C) Prolactin (from anterior pituitary) 

Explanation: After childbirth, prolactin (secreted by the anterior pituitary gland) stimulates the mammary glands to produce milk (lactation). Oxytocin helps in milk ejection (let-down reflex) the release of milk when the baby suckles. During pregnancy, high progesterone and estrogen suppress prolactin's effect. After delivery, these hormones drop, allowing prolactin to act.

Q.31 The colostrum secreted in the initial days of lactation is important because it:

• (A) Contains high levels of fats
• (B) Contains antibodies (especially IgA) that protect the newborn from infections
• (C) Is low in protein
• (D) Is produced by the corpus luteum

✅ Correct Answer: (B) Contains antibodies (especially IgA) that protect the newborn 

Explanation: Colostrum is the thick, yellowish fluid produced by the mammary glands in the first few days after delivery. It is rich in proteins, vitamins, and most importantly, immunoglobulins (especially IgA). These antibodies provide passive immunity to the newborn, protecting it from infections in the early weeks of life when its own immune system is not yet fully developed.

Q.32 The phase of the menstrual cycle during which follicular development occurs and estrogen levels rise is called:

• (A) Luteal phase
• (B) Menstrual phase
• (C) Ovulatory phase
• (D) Follicular/Proliferative phase

✅ Correct Answer: (D) Follicular/Proliferative phase 

Explanation: The follicular phase (days 1–13) is characterised by FSH-driven growth of ovarian follicles → rising estrogen → proliferation (thickening) of the endometrium. It ends with the LH surge triggering ovulation on day 14. The luteal phase (days 15–28) follows ovulation → corpus luteum forms → progesterone dominates → endometrium prepares for implantation.

Why Is Human Reproduction So Important for CUET Biology?

Human Reproduction is one of the highest-weightage chapters in CUET Biology, consistently contributing 4–6 questions every year since CUET began in 2022. The topic comes from Class 12 NCERT Biology Chapter 3 and forms part of Unit 1 — Reproduction.

According to Toprankers analysis, Reproduction as a unit carries 20–25% of the total Biology marks in CUET. Students who thoroughly practise CUET Biology Human Reproduction PYQs consistently outperform those who skip this chapter.

Key reasons to prioritise this topic:

• Questions are direct and NCERT-based — no tricks, just clarity
• Subtopics like spermatogenesis, oogenesis, fertilisation, and implantation are repeated every year
• Diagram-based and definition-based questions from this chapter are easy to score with the right preparation
• Solving CUET human reproduction PYQs builds pattern recognition for similar questions in CUET 2027

What Is the Exam Pattern for CUET Biology 2027?

Parameter	Details
Total Questions	50 (attempt any 40)
Question Type	MCQ (4 options)
Marks per Question	+5 for correct answer
Negative Marking	-1 for wrong answer
Total Marks	200
Duration	45 minutes
Difficulty Level	Moderate to Difficult
NCERT Based?	Yes — 100% NCERT

Human Reproduction questions in CUET are typically definition-based, process-based, and sometimes assertion-reason type, making PYQ practice the most effective preparation strategy.

Attempt FREE CUET Mock Tests!

What Is the Syllabus of Human Reproduction in CUET Biology 2027?

The CUET Biology Human Reproduction syllabus is based entirely on NCERT Class 12 Chapter 3. Here are the key subtopics you must cover:

Male Reproductive System

• Structure of testis, seminiferous tubules
• Leydig cells (secrete testosterone), Sertoli cells (nourish sperms)
• Accessory ducts: epididymis, vas deferens, ejaculatory duct, urethra
• Accessory glands: seminal vesicles, prostate gland, bulbourethral gland

Female Reproductive System

• Ovaries, fallopian tubes (oviducts), uterus, vagina
• Layers of the uterus: perimetrium, myometrium, endometrium
• Fimbriae — collect the ovum after ovulation

Gametogenesis

• Spermatogenesis: spermatogonia → primary spermatocyte → secondary spermatocyte → spermatid → sperm
• Spermiogenesis: conversion of a spermatid to a sperm
• Spermiation: release of sperm from Sertoli cells
• Oogenesis: oogonia → primary oocyte → secondary oocyte → ovum + polar bodies
• The primary oocyte is arrested at Prophase I of meiosis

Menstrual Cycle

• Duration: ~28 days
• Phases: Menstrual (1–5), Follicular (1–13), Ovulation (Day 14), Luteal (15–28)
• Hormones: FSH, LH, Oestrogen, Progesterone

Fertilisation and Implantation

• Fertilisation occurs in the ampullary region of the fallopian tube
• Zygote → 2-cell stage → morula → blastocyst
• Blastocyst implants in the endometrium (uterine wall)

Pregnancy and Parturition

• Gestation period: 9 months / ~266–280 days
• Placenta: site of nutrient, gas, and waste exchange between mother and foetus
• Parturition: process of childbirth, triggered by oxytocin

Lactation

• Colostrum: first milk secreted after childbirth, rich in IgA antibodies

Read More: CUET Biology Syllabus 2027 – Complete Chapter-Wise Breakdown

What Are the Most Repeated Topics from Human Reproduction in CUET 2027?

Based on CUET 2022, 2023, 2024, and 2025 analysis, here are the highest-frequency subtopics:

Subtopic	Frequency in CUET	Difficulty
Spermatogenesis / Spermiogenesis	Very High	Moderate
Oogenesis & Polar Bodies	Very High	Moderate
Fertilisation (site, process)	High	Easy
Implantation & Blastocyst	High	Moderate
Menstrual Cycle & Hormones	High	Moderate
Leydig vs Sertoli Cells	High	Easy
Placenta & its functions	Moderate	Easy
Colostrum & Lactation	Moderate	Easy
Acrosome Reaction	Moderate	Moderate
Corpus Luteum & hCG	High	Moderate

Instant Scholarship Test for CUET 2026 Prep! Take NOW!

How to Prepare Human Reproduction for CUET Biology 2027?

Want a complete strategy for CUET Biology preparation? Check out these resources from Toprankers: How to Prepare for CUET Biology CUET Biology Exam Pattern

1. Read NCERT Carefully

All CUET Human Reproduction questions are NCERT-based. Read Chapter 3 of Class 12 Biology multiple times, especially diagrams of the male and female reproductive systems, the menstrual cycle, and embryo development stages.

2. Practice Sequencing Questions

Arrangement/sequencing questions (embryo development, spermatogenesis steps, duct pathway) are a CUET favourite. Practise all sequences with mnemonics.

3. Draw and Label Diagrams

The seminiferous tubule structure, ovarian follicle stages, sperm structure, and menstrual cycle graph are drawn by you. Visual memory significantly improves recall speed in the exam.

4. Solve All PYQs

Go through all available CUET 2022, 2023, 2024, and 2025 Biology PYQs on Human Reproduction. Also, check CUET Biology Question Papers for full-length practice.

5. Take Mock Tests

After completing the chapter, take full-length Biology mock tests to improve speed and accuracy. Check CUET Biology Important Questions for topic-specific practice sets.

7. Focus on Comparison-Based Concepts

Spermatogenesis vs Oogenesis, Graafian follicle vs Corpus luteum, Sertoli cells vs Leydig cells, these contrasting concepts frequently appear as MCQs. Make comparison tables in your notes.

8. Use Quality Books

NCERT + Trueman's Biology + Arihant's CUET Biology are the best books. Check our guide on Best Books for CUET Biology 2027 for detailed recommendations.

Conclusion

Human Reproduction is undoubtedly one of the highest-scoring chapters in CUET Biology. With consistent appearance across all CUET papers since 2022, a thorough understanding of this chapter from Class 12 NCERT is non-negotiable for serious aspirants. 

The key to mastering this chapter lies in three things: reading NCERT carefully, understanding hormonal regulation and embryo development, and practising as many CUET Biology Human Reproduction PYQs as possible.

Use the 30+ PYQs provided in this blog as your primary revision tool. Make sure you understand the explanation behind each answer, not just memorise it. A conceptual approach will help you handle any variation the CUET exam might throw at you in 2027.

For a more complete preparation, explore the full suite of CUET Biology resources on Toprankers: from the CUET Biology Syllabus to Important Topics, Free Notes, Best Books, and Exam Pattern, all in one place. Good luck with your CUET 2027 preparation!