Class-12 Biology Ch-3 Human Reproduction MCQs Exam 2027 
Class-12 Biology Ch-3 Human Reproduction MCQs Exam 2027 Details: नीचे दिए गए सभी Questions Bihar Board परीक्षा 2027 के लिए “Very Very Important Multiple Choice Questions (MCQs) Objective” (अत्यंत महत्वपूर्ण प्रश्न) हैं। इन सभी Class 12th Biology /जीवविज्ञान ) = जीवविज्ञान भाग-1 (English Medium) Book Chapter-3 Human Reproduction का Questions का Solve का वीडियो Youtube और Website पर Upload किया है।
I. Male Reproductive System
Why are testes located outside the abdominal cavity in the scrotum in males? [2016A]
(A) For protection
(B) For low temperature required for spermatogenesis
(C) For the development of reproductive organs
(D) For easy urination
In mammals, testes descend into the scrotum for— [2010A]
(A) Spermatogenesis
(B) Fertilization
(C) Development of reproductive organs
(D) Development of visceral organs
Sertoli cells provide help in— [2018A]
(A) Enzyme production
(B) Ovum production
(C) Nutrition of sperm
(D) Hormone production
Sertoli cells are found in— [2021A]
(A) Testis
(B) Uterus
(C) Ovary
(D) Liver
Which of the following cells are found in seminiferous tubules? [2026]
(A) Sertoli cells
(B) Interstitial cells
(C) Spermatogonia
(D) Both (A) and (C)
Where are Leydig cells found? [2015A]
(A) In Liver
(B) In Testis
(C) In Kidney
(D) In Intestine
The hormone-secreting cell in the testis is— [2013A]
(A) Spermatogonia
(B) Spermatocyte
(C) Sustentacular cell
(D) Leydig cells
From where does the Vas deferens emerge in humans? [2012A]
(A) Cauda epididymis
(B) Caput epididymis
(C) Corpora cavernosa
(D) Glomus major
Where is the storage and nutrition of sperm done in humans? [2014A]
(A) Testis
(B) Vasa efferentia
(C) Epididymis
(D) Spermatic cord
Cowper’s gland is present in— [2015A]
(A) Testis of mammals
(B) Reproductive system of male rabbit and human
(C) Reproductive system of female mammals
(D) None of these
Which of the following is NOT present in males? [2010A]
(A) Bulbourethral glands
(B) Bartholin’s glands
(C) Prostate glands
(D) Cowper’s glands
What is the main function of the Urethra? [2023A]
(A) Only urination
(B) Only ejaculation
(C) Both urination and ejaculation
(D) None of these
What is NOT found in human semen? [2019A]
(A) Fructose
(B) Calcium
(C) Glucose
(D) Enzyme
Human seminal plasma is rich in— [2014A]
(A) Fructose and calcium but no enzymes
(B) Glucose and some enzymes but low calcium
(C) Fructose, calcium, and certain enzymes
(D) Fructose and calcium
The pH of human semen is— [2012A]
(A) 4.5-5.5
(B) 6.5-6.8
(C) 7.3-7.5
(D) 8.2-8.5
Which secretion contains the highest amount of fructose, calcium, and enzymes? [2012A]
(A) Male accessory gland
(B) Liver
(C) Pancreas
(D) Salivary gland
Which clinical enzyme test is used for prostate cancer? [2011A]
(A) Amylase
(B) Alkaline phosphatase
(C) $\gamma$-GT pase
(D) Acid phosphatase
Which of the following is a primary reproductive organ? [2011A]
(A) Scrotum
(B) Penis
(C) Testis
(D) Prostate
The method of cutting and tying the vas deferens for family planning is called— [2015A]
(A) Tubectomy
(B) Ovarectomy
(C) Vasectomy
(D) Castractomy
II. Female Reproductive System
Uterus is related to— [2019A]
(A) Male reproductive system
(B) Female reproductive system
(C) Plant reproductive system
(D) All of these
The inner layer of the uterine wall is called— [2022A]
(A) Myometrium
(B) Endometrium
(C) Perimetrium
(D) Epithelium
Endometrium forms the lining of— [2012A]
(A) Bladder
(B) Vagina
(C) Uterus
(D) Oviduct
Where is the Cervix found? [2011A]
(A) Kidney
(B) Fallopian tube
(C) Between the body of uterus and vagina
(D) In Epididymis
The part of the Fallopian tube closest to the ovary is— [2013A]
(A) Isthmus
(B) Infundibulum
(C) Cervix
(D) Ampulla
Where is the Graafian Follicle found? [2015A, 2023A]
(A) In the ovary of a frog
(B) In the testis of a male human
(C) In the ovary of a female human
(D) In the testis of a rabbit
In females, the Clitoris is homologous to— [2012A]
(A) Penis of male
(B) Prostate of male
(C) Vestigial organ
(D) None of these
III. Gametogenesis
The formation of gametes is called— [2019A, 2021A]
(A) Gametogenesis
(B) Cytokinesis
(C) Sporogenesis
(D) Meiosyte
Gametes are generally of which type? [2016A]
(A) Haploid
(B) Diploid
(C) Polyploid
(D) Nulliploid
Which of the following is a haploid structure? [2023A, 2024A]
(A) Ovum
(B) Gamete
(C) Secondary oocyte
(D) All of these
A primary spermatocyte is— [2015A]
(A) Diploid
(B) Haploid
(C) Triploid
(D) Polyploid
In which of the following does the first meiotic division occur? [2010A]
(A) Primary spermatocytes
(B) Secondary spermatocytes
(C) Sertoli cell
(D) Leydig cell
The process of spermatogenesis is initiated by— [2015A]
(A) GnRH
(B) TSH
(C) PRL
(D) MSH
Spermatogenesis is promoted by— [2014A]
(A) FSH
(B) MSH
(C) ACTH
(D) hCG
By which division do male germ cells (Spermatogonia) produce sperm? [2020A]
(A) Meiotic division
(B) Mitotic division
(C) Amitosis
(D) None
How many sperms are formed from one primary spermatocyte? [2017A]
(A) 1
(B) 2
(C) 4
(D) 8
How many sperms will be formed from four primary spermatocytes? [2014A]
(A) 4
(B) 1
(C) 16
(D) 32
How many sperms will be formed from one secondary spermatocyte? [2013A]
(A) Two
(B) Three
(C) Four
(D) Sixteen
How many secondary spermatocytes are required to produce 400 sperms? [2015A]
(A) 100
(B) 200
(C) 40
(D) 400
The process of formation of sperm from spermatids is called— [2021A]
(A) Spermatogenesis
(B) Spermiogenesis
(C) Spermiation
(D) All of the above
By which method are spermatids transformed into spermatozoa? [2013A, 2015A]
(A) Spermiogenesis
(B) Spermatogenesis
(C) Spermiation
(D) Spermatosis
The release of sperm from Sertoli cells into the cavity of seminiferous tubules is called— [2015A]
(A) Spermiogenesis
(B) Spermiation
(C) Spermatogenesis
(D) None
What happens in the final stage of sperm formation from spermatids? [2010A]
(A) Formation of acrosome
(B) Formation of microtubules
(C) Tail formation
(D) Loss of cytoplasm
IV. Sperm Structure
A cap-like structure found on the head of a mature sperm is called— [2019A]
(A) Acrosome
(B) Mesosome
(C) Episome
(D) Spherosome
Acrosome is a part of— [2014A, 2017A]
(A) Head of human sperm
(B) Middle piece of human sperm
(C) Tail of human sperm
(D) None of these
The acrosome of human sperm is formed by— [2012A, 2022A]
(A) Nucleus
(B) Lysosome
(C) Golgi body
(D) Endoplasmic reticulum
In a sperm, where is the nucleated genetic material found? [2012A]
(A) Acrosome
(B) Head
(C) Middle piece
(D) Tail
What is found in the middle piece of mammalian sperm? [2012A, 2021A]
(A) Nucleus
(B) Vacuole
(C) Mitochondria
(D) Centriole
What does the middle piece of sperm provide? [2020A]
(A) Nutrition
(B) Energy
(C) Motility
(D) Genetic material
Where is the arrangement of spiral mitochondria (Nebenkern) around the axial filament found? [2012A]
(A) Head
(B) Middle piece
(C) End piece of tail
(D) Main piece of tail
The movement of sperm is caused by— [2023A]
(A) Acrosome
(B) Middle piece
(C) Head
(D) Tail
The arrangement of microtubules in sperm tail is— [2011A]
(A) 9 + 0
(B) 9 + 2
(C) 7 + 0
(D) 7 + 2
In which condition does sperm motility decrease drastically? [2011A]
(A) Azoospermia
(B) Polyspermy
(C) Oligospermia
(D) Asthenospermia
V. Ovum & Oogenesis
What is the total number of eggs produced in the lifetime of a healthy woman? [2018A]
(A) 4000
(B) 400
(C) 40
(D) 365
How many ova will be formed from one primary oocyte in a female? [2015A]
(A) Two
(B) One
(C) Four
(D) None
Which structure is NOT present in the cytoplasm of an egg? [2013A]
(A) Ribosome
(B) Mitochondria
(C) Centrosome
(D) Golgi body
What is absent in the cytoplasm of an ovum? [2013A]
(A) Ribosome
(B) Mitochondria
(C) Golgi body
(D) Centrosome
Human egg is almost yolk-less, it is called— [2010A]
(A) Microlecithal
(B) Alecithal
(C) Macrolecithal
(D) Merolecithal
In a Teleocithal egg, yolk is found— [2012A]
(A) At both ends
(B) At one end
(C) In the middle
(D) Throughout the cytoplasm
Cortical granules present in the cortex of the egg mainly contain— [2012A]
(A) Lipid granules
(B) Glycogen
(C) Protein
(D) Mucopolysaccharides
VI. Menstrual Cycle
Menstrual cycle occurs in— [2021A]
(A) Humans
(B) Monkeys
(C) Chimpanzees
(D) All of these
Female animal in which Oestrus cycle occurs— [2022A]
(A) Monkey
(B) Human
(C) Both (A) and (B)
(D) Cow
The stopping of the menstrual cycle in a woman is called— [2011A]
(A) Menarche
(B) Menopause
(C) Ovulation
(D) Lactation
The hormone that has no contribution to the menstrual cycle— [2014A]
(A) LH
(B) FSH
(C) Estradiol
(D) TSH
The phase of the menstrual cycle that ends at 7-8 days is called— [2013A]
(A) Menstruation
(B) Luteal phase
(C) Ovulatory phase
(D) Follicular phase
Which of the following is the correct statement for the menstrual cycle duration? [2015A]
(A) Ovulation: 5th day
(B) Reconstruction of endometrium: 5-10th day
(C) Production of nutrients by endometrium: 11-18th day
(D) Increase in progesterone level: 1-15th day
When is the mature Graafian follicle usually present in the female ovary? [2012A]
(A) 5-8th day of menstrual cycle
(B) 11-17th day of menstrual cycle
(C) 18-23rd day of menstrual cycle
(D) 24-28th day of menstrual cycle
VII. Ovulation
What is the release of eggs from the ovary of a human female called? [2021A]
(A) Implantation
(B) Fertilization
(C) Ovulation
(D) Parturition
Ovulation is possible due to the influence of which hormone? [2015A]
(A) LH
(B) FSH
(C) Estrogen
(D) Progesterone
The hormone responsible for ovulation and development of corpus luteum is— [2014A]
(A) FSH
(B) LH
(C) LTH
(D) ICSH
Rupturing of follicles and release of ova is called— [2010A]
(A) Copulation
(B) Conjugation
(C) Ovulation
(D) Oogenesis
The growth and maturation of Graafian follicle is controlled by— [2013A]
(A) FSH-LH
(B) FSH-LTH
(C) ACTH-LH
(D) GH-ADH
After ovulation, the ovum is surrounded by which cell group? [2024A]
(A) Corona radiata
(B) Zona pellucida
(C) Granulosa cells
(D) Theca layer
The release of ovum from the follicle occurs at which stage? [2013A]
(A) Primary oocyte stage
(B) Secondary oocyte stage
(C) Oogonial stage
(D) ‘A’ or ‘B’
After ovulation, the regression of follicular cells first occurs in— [2013A]
(A) Corpus atresia
(B) Corpus callosum
(C) Corpus luteum
(D) Corpus albicans
Which part of the ovary acts as an endocrine gland after ovulation? [2014A]
(A) Stroma
(B) Germinal epithelium
(C) Vitelline membrane
(D) Graafian follicle
Which is the main hormone secreted by ‘Corpus luteum’? [2019A]
(A) Estrogen
(B) Progesterone
(C) Testosterone
(D) hCG
Where is progesterone hormone secreted from? [2020A]
(A) Corpus callosum
(B) Corpus uteri
(C) Corpus luteum
(D) Corpus albicans
Which of the following secretes a large amount of progesterone? [2024A]
(A) Graafian follicle
(B) White body
(C) Yellow body (Corpus luteum)
(D) Primary follicle
In which of the following is estrogen secreted? [2012A]
(A) Corpus luteum
(B) Membrane granulosa of Graafian follicle
(C) Germinal epithelium of ovary
(D) Pituitary gland
The life span of an egg is— [2015A]
(A) 48 hours
(B) 12 hours
(C) 24 hours
(D) 8 hours
When released from the ovary, the human egg contains— [2013A]
(A) One Y-chromosome
(B) Two X-chromosomes
(C) One X-chromosome
(D) XY chromosomes
VIII. Fertilization
Where does fertilization occur in humans? [2021A]
(A) Uterus
(B) Vagina
(C) Ovary
(D) Fallopian tube (Ampulla)
Where is the process of fertilization completed? [2018A]
(A) Cervix
(B) Uterus
(C) Ampullary region of oviduct
(D) Any part of the oviduct
In the absence of which ion can fertilization not occur? [2012A]
(A) Sodium
(B) Potassium
(C) Calcium
(D) Iron
Capacitation is a natural process that occurs in— [2022A]
(A) Epididymis
(B) Female reproductive tract
(C) Vas deferens
(D) Rete testis
Fertilizin is a glycoprotein found on— [2011A]
(A) Surface of the egg
(B) Surface of the sperm
(C) Uterine wall
(D) Tail of the sperm
Sperm produces an enzyme-rich substance to dissolve the egg’s envelope, it is called— [2013A]
(A) Hyaluronic acid
(B) Hyaluronidase
(C) Androgamone
(D) Diastase
What will NOT be possible for a sperm without an acrosome? [2014A]
(A) It cannot take food
(B) It cannot move
(C) It cannot enter the seminal vesicle
(D) It cannot penetrate the ovum
What happens to the sperm’s tail during fertilization? [2013A]
(A) Enters inside the ovum
(B) Remains outside the ovum
(C) Reaches the plasma membrane of the egg
(D) Reaches the cytoplasm of the egg
Which of the following is a diploid structure? [2017A, 2021A]
(A) Ovum
(B) Sperm
(C) Zygote
(D) Both (A) and (B)
Which hormone is found in the mother’s urine after fertilization? [2014A]
(A) LH
(B) Progesterone
(C) FSH
(D) hCG
Pregnancy is determined by urine test through the presence of— [2014A]
(A) hCG
(B) Estrogen
(C) Progesterone
(D) LH
Fertilization is internal in— [2022A]
(A) Starfish
(B) Sharks
(C) Bony fishes
(D) Amphibians
IX. Cleavage & Embryo Development
What type of cleavage is found in humans? [2022A]
(A) Holoblastic
(B) Meroblastic
(C) Superficial
(D) None of these
What type of cleavage occurs in the embryo of a human female? [2014A]
(A) Holoblastic and equal
(B) Meroblastic
(C) Holoblastic and unequal
(D) Diploblastic
In mammalian eggs, cleavage is— [2011A]
(A) Meroblastic
(B) Holoblastic
(C) Unequal
(D) Spiral
What is the correct statement for cleavage? [2012A]
(A) Embryo size increases
(B) Cell size decreases
(C) Cell size increases
(D) Embryo size decreases
Cleavage differs from mitosis in what way? [2013A]
(A) It occurs in all body cells
(B) It occurs in the zygote
(C) It forms identical daughter cells
(D) It occurs only in invertebrates
What is the 16-cell stage of the embryo called? [2024A]
(A) Blastula
(B) Gastrula
(C) Morula
(D) Blastomere
Which of the following is implanted in the lining of the uterus? [2022A]
(A) Morula
(B) Gastrula
(C) Zygote
(D) Blastocyst
Finger-like projections appearing in the trophoblast after implantation are called— [2020A]
(A) Chorionic villi
(B) Intestinal villi
(C) Inter villi
(D) All of the above
What is true for the blastocyst in a female? [2015A]
(A) It forms the placenta before implantation
(B) It is implanted three days after ovulation
(C) It takes nutrients from the uterine wall after implantation
(D) It is implanted by trophoblast cells along with the endometrium
Where do chorionic villi develop? [2024A]
(A) In the inner layer
(B) In the trophoblast
(C) In the ectoderm
(D) In all of these
When does the replacement of the fertilized egg into the uterus occur in a female? [2010A]
(A) Two months after fertilization
(B) Three weeks after fertilization
(C) Seven days after fertilization
(D) One month after fertilization
Before implantation, the embryo gets nutrition from— [2011A]
(A) Ovary
(B) Oviduct
(C) Uterine secretions
(D) Its own yolk
The Inner Cell Mass is the precursor of— [2012A]
(A) Ectoderm
(B) Mesoderm
(C) Endoderm
(D) Entire embryo
If endoderm cells are removed in the gastrula stage, what will not form in the new organism? [2012A]
(A) Eye
(B) Heart
(C) Internal organs
(D) Eye and brain
From which germ layer is the heart formed? [2018A]
(A) Ectoderm
(B) Mesoderm
(C) Endoderm
(D) Ecto-endoderm
From which germ layer do blood and the circulatory system originate? [2020A]
(A) Ectoderm
(B) Mesoderm
(C) Endoderm
(D) None of these
Digestive system, liver, and respiratory tract are formed from— [2011A]
(A) Archenteron
(B) Blastocoel
(C) Endoderm
(D) Ectoderm
X. Placenta
The placenta in humans is formed by— [2022A]
(A) Amnion
(B) Allantois
(C) Chorion
(D) Chorion and Allantois
What type of placenta is found in humans? [2015A]
(A) Chorionic
(B) Hemochorial
(C) Metadiscoidal
(D) All of these
Hemochorial placenta is found in which of the following? [2023A]
(A) Cats
(B) Dogs
(C) Humans
(D) Horses
How does the fetus get nutrition and respiration? [2012A]
(A) Allantois
(B) Placenta
(C) Yolk sac
(D) Chorion
In mammalian embryos, blood flow in the umbilical cord is— [2013A]
(A) 50% Maternal and 50% Fetal
(B) 100% Fetal
(C) 100% Maternal
(D) 75% Maternal and 25% Fetal
Which embryo layer helps in connecting the placenta to the chorion? [2010A]
(A) Amnion
(B) Chorion
(C) Allantois
(D) Yolk sac
XI. Pregnancy & Parturition
What is the gestation period in a human female? [2017A]
(A) 30 days
(B) 90 days
(C) 9 months
(D) 7 months
The duration of pregnancy in humans in days is— [2014A]
(A) 200
(B) 250
(C) 260
(D) 270
What is the pregnancy period? [2012A]
(A) Between birth and puberty
(B) Between embryo formation and pregnancy
(C) Between fertilization and childbirth
(D) Between fertilization and implantation
In which month of pregnancy does the fetus become mobile and hair grows on the head? [2012A]
(A) Fourth month
(B) Fifth month
(C) Sixth month
(D) Third month
After how many months of pregnancy do the limbs and digits of the fetus develop? [2024A]
(A) 2 months
(B) 3 months
(C) 1 month
(D) 6 months
In what is the human embryo protected? [2022A]
(A) Allantois
(B) Amniotic cavity
(C) Pleural cavity
(D) Peritoneal cavity
What does Parturition mean? [2010A]
(A) Separation of embryo
(B) Development of embryo
(C) Act of birth
(D) Contraction of uterus
Which is the main hormone responsible for Parturition? [2023A]
(A) Oxytocin
(B) Insulin
(C) Thyroxine
(D) Adrenaline
What do doctors inject to induce parturition? [2019A]
(A) Oxytocin
(B) Progesterone
(C) LH
(D) FSH
Where does the signal for Parturition originate from? [2015A]
(A) Placenta
(B) Placenta and fully developed fetus
(C) Oxytocin secreted from mother’s pituitary
(D) Fully developed fetus
When does the Decidua come out of the uterus? [2010A]
(A) Along with the birth of the baby
(B) After the birth of the baby
(C) Before the birth of the baby
(D) During menstruation
The first milk secretion from the mother after birth is called Colostrum. What does it contain? [2013A]
(A) IgA
(B) IgD
(C) IgE
(D) IgG
XII. Important Mixed Questions
‘Saheli’, which is a female contraceptive pill, is used— [2018A]
(A) Daily
(B) Weekly
(C) Quarterly
(D) Monthly
In females, secondary sexual characters develop due to the reaction of which hormone? [2016A]
(A) Relaxin
(B) Progesterone
(C) Estrogen
(D) Gonadotropin
In the uterus, the endometrium increases in thickness in response to— [2014A]
(A) Oxytocin
(B) Estrogen
(C) LH
(D) Relaxin
Germ pore is the place where— [2016A]
(A) Exine is thin
(B) Exine is absent
(C) Intine is thick
(D) None of these
Which of the following combines with the male gamete to form Endosperm? [2011A]
(A) Unfertilized egg
(B) Synergid
(C) Antipodals
(D) Secondary nucleus
Which of the following cells is haploid? [2024A]
(A) Oogonia
(B) Primary oocyte
(C) Secondary oocyte
(D) Zygote
Which of the following placental hormones is produced during pregnancy? [2026]
(A) hCG
(B) hPL
(C) Relaxin
(D) All of these
In which structure of sperm are the enzymes present which help in fertilization of the ovum? [2026]
(A) Middle piece
(B) Neck
(C) Nucleus
(D) Acrosome
What is it called when an embryo having more than eight blastomeres is transferred to the uterus for development? [2026]
(A) IVF
(B) Intrauterine Transfer
(C) Zygote Intra-fallopian Transfer (ZIFT)
(D) ICSI
Which of the following is one of the most resistant organic materials? [2026]
(A) Pectin
(B) Cellulose
(C) Sporopollenin
(D) Chitin
Which of the following cells is present in the pollen grain of angiospermic plants? [2026]
(A) Vegetative cell
(B) Generative cell
(C) Antipodal cell
(D) Both (A) and (B)
In which of the following seeds is perisperm NOT found? [2026]
(A) Beet
(B) Black pepper
(C) Wheat
(D) Both (A) and (B)
Which of the following seeds has more than one embryo? [2026]
(A) Citrus
(B) Mango
(C) Orange
(D) All of these
Which cell of the embryo sac becomes the primary endosperm cell after triple fusion? [2026]
(A) Central cell
(B) Synergids
(C) Antipodals
(D) Egg cell
Which of the following plays an important role in guiding the pollen tube into the synergids? [2026]
(A) Antipodals
(B) Filiform apparatus
(C) Central cell
(D) Micropyle
What is the cotyledon called in the grass family? [2026]
(A) Plumule
(B) Radicle
(C) Hypocotyl
(D) Scutellum
What is Prostaglandin? [2013A]
(A) Protein
(B) Carbohydrate
(C) Lipid
(D) Unsaturated fatty acid
What does the presence of fructose in forensic investigation via seminal vesicle secretion indicate? [2015A]
(A) Syphilis
(B) AIDS
(C) Rape
(D) Hepatitis
How many sperms are formed from one spermatid? [2017A]
(A) 1
(B) 2
(C) 4
(D) None
The process of formation of sperm from spermatids is called— [2021A]
(A) Spermatogenesis
(B) Spermiogenesis
(C) Spermiation
(D) All of the above
In whom does the embryo get nutrition like a parasite? [2011A]
(A) Birds
(B) Amphibians
(C) Reptiles
(D) Mammals
The acrosome of human sperm is formed by— [2022A]
(A) Nucleus
(B) Lysosome
(C) Golgi body
(D) Endoplasmic reticulum
What type of cleavage occurs in the human female embryo? [2014A]
(A) Holoblastic and equal
(B) Meroblastic
(C) Holoblastic and unequal
(D) Diploblastic
What is the main role of the large amount of progesterone secreted by corpus luteum? [2026]
(A) Maintenance of endometrium of uterus
(B) Maintenance of perimetrium of uterus
(C) Maintenance of myometrium of uterus
(D) None of these
Which of the following cells is haploid? [2026]
(A) Oogonia
(B) Primary oocyte
(C) Secondary oocyte
(D) All of these
The uterus belongs to which system? [2019A]
(A) Male reproductive system
(B) Female reproductive system
(C) Plant reproductive system
(D) All of these
Where does fertilization occur in humans? [2021A]
(A) Uterus
(B) Vagina
(C) Ovary
(D) Fallopian tube (Ampulla)
In which month of pregnancy does hair grow on the baby’s head? [2012A]
(A) Third month
(B) Fourth month
(C) Fifth month
(D) Sixth month
Loss of sperm motility or reduction in sperm count in semen— [2010A]
(A) Estrogen
(B) L.H.
(C) Androgen
(D) None of these
A primary spermatocyte is— [2015A]
(A) Diploid
(B) Haploid
(C) Triploid
(D) Polyploid
Acrosome is formed from— [2012A]
(A) Centriole
(B) Golgi body
(C) Mitochondria
(D) Nucleus
The transformation of spermatid into spermatozoon is called— [2013A]
(A) Spermatogenesis
(B) Spermiogenesis
(C) Spermatocytogenesis
(D) Gametogenesis
Where are Leydig cells found? [2015A]
(A) Liver
(B) Testis
(C) Kidney
(D) Intestine
The pH value of human semen is— [2012A]
(A) 4.5-5.5
(B) 6.5-6.8
(C) 7.3-7.5
(D) 8.2-8.5
In females, the Clitoris is homologous to— [2012A]
(A) Penis of male
(B) Analogous to Penis of male
(C) Vestigial organ
(D) Homologous to Prostate
How many ova will be formed from one primary oocyte? [2015A]
(A) One
(B) Two
(C) Four
(D) Eight
Antrum is the cavity of— [2012A]
(A) Ovary
(B) Graafian follicle
(C) Blastula
(D) Gastrula
The inner layer of the uterine wall is called? [2022A]
(A) Myometrium
(B) Endometrium
(C) Perimetrium
(D) Episome
Which is the main hormone responsible for Parturition? [2023A]
(A) Oxytocin
(B) Insulin
(C) Thyroxine
(D) Adrenaline
Ovulation is induced by which hormone? [2015A]
(A) LH
(B) FSH
(C) Estrogen
(D) Progesterone
Sertoli cells are controlled by which hormone? [2012A]
(A) LH
(B) FSH
(C) GH
(D) Prolactin
In humans, the Vas deferens emerges from— [2012A]
(A) Cauda epididymis
(B) Caput epididymis
(C) Corpora cavernosa
(D) Glomus major
Which of the following cells is haploid? [2026]
(A) Oogonia
(B) Primary oocyte
(C) Secondary oocyte
(D) All of these
What is the cotyledon in the grass family seed called? [2026]
(A) Plumule
(B) Radicle
(C) Hypocotyl
(D) Scutellum
In which of the following seeds is perisperm NOT found? [2026]
(A) Beet
(B) Black pepper
(C) Wheat
(D) Both (A) and (B)
Who guides the pollen tube to enter the synergid? [2026]
(A) Antipodal cells
(B) Filiform apparatus
(C) Central cell
(D) Micropyle
After how many months of pregnancy do the limbs and fingers of the fetus develop? [2026]
(A) One month
(B) Two months
(C) Three months
(D) Six months
Bihar Board Class 12th के (Biology/जीवविज्ञान ) = जीवविज्ञान ‘भाग-1 (Englsih Medium) Book Chapter-3 Human Reproduction के Exam 2027 MCQs Questions Answer Key
| Q. No. | Ans | Q. No. | Ans | Q. No. | Ans | Q. No. | Ans |
| 1 | (B) | 45 | (C) | 89 | (B) | 133 | (D) |
| 2 | (A) | 46 | (B) | 90 | (C) | 134 | (C) |
| 3 | (C) | 47 | (C) | 91 | (D) | 135 | (D) |
| 4 | (A) | 48 | (B) | 92 | (A) | 136 | (D) |
| 5 | (D) | 49 | (B) | 93 | (B) | 137 | (B) |
| 6 | (B) | 50 | (D) | 94 | (A) | 138 | (C) |
| 7 | (D) | 51 | (B) | 95 | (A) | 139 | (D) |
| 8 | (A) | 52 | (D) | 96 | (B) | 140 | (C) |
| 9 | (C) | 53 | (B) | 97 | (B) | 141 | (D) |
| 10 | (B) | 54 | (B) | 98 | (B) | 142 | (A) |
| 11 | (B) | 55 | (C) | 99 | (C) | 143 | (B) |
| 12 | (C) | 56 | (D) | 100 | (D) | 144 | (D) |
| 13 | (C) | 57 | (B) | 101 | (A) | 145 | (D) |
| 14 | (C) | 58 | (B) | 102 | (D) | 146 | (C) |
| 15 | (C) | 59 | (D) | 103 | (B) | 147 | (A) |
| 16 | (A) | 60 | (D) | 104 | (C) | 148 | (B) |
| 17 | (D) | 61 | (D) | 105 | (C) | 149 | (D) |
| 18 | (C) | 62 | (B) | 106 | (D) | 150 | (C) |
| 19 | (C) | 63 | (D) | 107 | (C) | 151 | (A) |
| 20 | (B) | 64 | (D) | 108 | (B) | 152 | (A) |
| 21 | (B) | 65 | (B) | 109 | (B) | 153 | (C) |
| 22 | (C) | 66 | (B) | 110 | (C) | 154 | (B) |
| 23 | (C) | 67 | (C) | 111 | (D) | 155 | (D) |
| 24 | (B) | 68 | (A) | 112 | (D) | 156 | (C) |
| 25 | (C) | 69 | (B) | 113 | (C) | 157 | (D) |
| 26 | (A) | 70 | (C) | 114 | (B) | 158 | (A) |
| 27 | (A) | 71 | (A) | 115 | (B) | 159 | (B) |
| 28 | (A) | 72 | (A) | 116 | (C) | 160 | (B) |
| 29 | (D) | 73 | (B) | 117 | (C) | 161 | (B) |
| 30 | (A) | 74 | (C) | 118 | (D) | 162 | (C) |
| 31 | (A) | 75 | (D) | 119 | (C) | 163 | (A) |
| 32 | (A) | 76 | (B) | 120 | (B) | 164 | (A) |
| 33 | (A) | 77 | (C) | 121 | (B) | 165 | (B) |
| 34 | (B) | 78 | (C) | 122 | (B) | 166 | (B) |
| 35 | (C) | 79 | (B) | 123 | (C) | 167 | (A) |
| 36 | (C) | 80 | (C) | 124 | (A) | 168 | (A) |
| 37 | (A) | 81 | (C) | 125 | (A) | 169 | (B) |
| 38 | (B) | 82 | (D) | 126 | (B) | 170 | (A) |
| 39 | (B) | 83 | (C) | 127 | (B) | 171 | (C) |
| 40 | (A) | 84 | (C) | 128 | (A) | 172 | (D) |
| 41 | (B) | 85 | (B) | 129 | (B) | 173 | (C) |
| 42 | (D) | 86 | (A) | 130 | (C) | 174 | (B) |
| 43 | (A) | 87 | (B) | 131 | (B) | 175 | (B) |
| 44 | (A) | 88 | (D) | 132 | (B) |
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