Are you looking for Human Reproduction Questions and Answers for NEET and other medical entrance examinations? If yes, these are some most important multiple choice questions and answers on NCERT Class-12 Biology, Chapter-3 (Human Reproduction).
Here we composed these 100+ MCQs and Answers on Human Reproduction after reading the chapter on Human Reproduction from the NCERT book on Class 12 Biology. The questions are topics-wise and the students can relate the questions easily to the most important topics of this chapter.
Contents
- 1 Human Reproduction Questions and Answers for NEET
- 1.1 The Male Reproductive System MCQ and Answers
- 1.2 The Male Accessory Ducts and Glands MCQ and Answers
- 1.3 The Male External Genitalia MCQ and Answers
- 1.4 The Female Reproductive System MCQ and Answers
- 1.5 The Female External Genitalia MCQ and Answers
- 1.6 Structure of a Mammary Gland MCQ and Answers
- 1.7 Spermatogenesis MCQ and Answers
- 1.8 Structure of a Sperm MCQ and Answers
- 1.9 Oogenesis MCQ and Answers
- 1.10 Structure of an Ovary MCQ and Answers
- 1.11 Menstrual Cycle MCQ and Answers
- 1.12 Fertilisation MCQ and Answers
- 1.13 Implantation MCQ and Answers
- 1.14 Pregnancy and Embryonic Development MCQ and Answers
- 1.15 Parturition and Lactation MCQ and Answers
- 1.16 FAQs on Human Reproduction
- 1.17 Share this:
Human Reproduction Questions and Answers for NEET
Human reproduction is an amazing process that is essential to the continuation of our species. Though it may seem simple, the process is actually quite complex and involves many different organs and systems.
The first step in human reproduction is the production of gametes or sex cells. These cells are created in the gonads, which are the sex organs. In males, the gonads are the testicles and in females, the gonads are the ovaries. The gametes produced by the gonads are sperm in males and eggs in females.
Once the gametes are produced, they must be transported to the female’s body for fertilization to occur. In humans, this is typically done through sexual intercourse. During intercourse, the male’s penis enters the female’s vagina and deposits sperm near the opening of the uterus.
If everything goes correctly, one of the sperm will fertilize the egg and the fertilized egg will implant itself in the uterus. From there, the fertilized egg will begin to grow and develop into a baby.
The average pregnancy lasts 40 weeks and during that time, the baby will continue to grow and develop inside the mother’s womb. At the end of the pregnancy, the baby will be born and begin its own life outside the mother’s body.
Human reproduction is a miraculous process that is essential to our existence. Though it may seem straightforward, there are actually a lot of complexities involved. But, it is all worth it when a new life is created as a result.
Here we published more than 150 multiple choice questions and answers on Human Reproduction.
The Male Reproductive System MCQ and Answers
1. Where is the male reproductive system located?
a) Pectoral region
b) Pelvis region
c) Abdominal region
d) Lumbar region
Answer: b
2. _________ divides the scrotum internally.
a) Dartos tunic
b) Valves
c) Septum
d) Septum scroti
Answer: d
3. _____ shows the external division of the scrotum.
a) Scar
b) Dartos
c) Raphe
d) Fold
Answer: c
4. Testes descend permanently into their respective scrotal sacs through the ______
a) inguinal canal
b) glomerulus
c) pudendal canal
d) infraorbital canal
Answer: a
5. Failure of the testes to descend into the scrotum is called _______
a) palatovaginal
b) cryptorchidism
c) pudendal
d) foramen
Answer: b
6. Testes are suspended in the scrotal sac by a ________
a) vas deferens
b) spermatic cords
c) foramens
d) urethra
Answer: b
7. Which tunicae of testes consists of a network of capillaries?
a) Tunica vaginalis
b) Tunica albuginea
c) Dartos tunic
d) Tunica vasculosa
Answer: d
8. Where are the sperms produced?
a) Prostate gland
b) Epidermis
c) Vas deferens
d) Seminiferous tubules
Answer: d
9. Which cells provide nutrition to the germ cells?
a) Sertoli cells
b) Spermatogonia
c) Interstitial cells
d) Leydig cells
Answer: a
The Male Accessory Ducts and Glands MCQ and Answers
10. Which of the following is not included in accessory ducts?
a) Vas deferens
b) Prostate
c) Rete testis
d) Epididymis
Answer: b
11. What is the middle part of the epididymis is known as?
a) Cauda epididymis
b) Caput epididymis
c) Corset epididymis
d) Corpus epididymis
Answer: b
12. The vas deferens is lined with ________ epithelium.
a) pseudostratified columnar
b) stratified columnar
c) stereocilia
d) smooth
Answer: a
13. Vas deferens, testicular artery, testicular vein and nerves that innervate the testes are together called as _________
a) Accessory ducts
b) Spermatozoa
c) Spermatic cord
d) Foramen
Answer: c
14. Which gland produces a milky secretion with a pH 6.5?
a) Prostate
b) Cowper’s
c) Bulbourethral
d) Seminal vesicles
Answer: a
15. The secretion of _______ helps in lubrication of the penis.
a) seminal vesicles
b) prostate glands
c) bulbourethral glands
d) urethra
Answer: c
16. The secretions of the accessory glands are rich in ______
a) magnesium
b) glucose
c) potassium
d) fructose
Answer: d
The Male External Genitalia MCQ and Answers
17. What do the Leydig cells secrete?
a) B cells
b) Semen
c) Sperms
d) Androgen
Answer: d
18. The growth, maintenance and functioning of secondary sex organs is maintained by the ____
a) leydig cells
b) seminal vesicles
c) posterior pituitary gland
d) testosterone
Answer: a
19. Where does the vas deferens emerge from?
a) Cauda epididymis
b) Caput epididymis
c) Corset epididymis
d) Corpus epididymis
Answer: a
20. Why does the end of the vas deferens dilate?
a) To enter the inguinal canal
b) For temporary storage of sperms
c) To enter the urinary bladder
d) For support
Answer: b
21. The free end of vas deferentia bears?
a) Ciliated cells
b) Pseudostratified columnar epithelium
c) Stereocilia
d) Leydig cells
Answer: c
22. External opening of the urethra is called _______
a) penile urethra
b) pubic symphysis
c) prostatic urethra
d) urethral meatus
Answer: d
23. What is the second part of the urethra called?
a) Prosthetic urethra
b) Membranous urethra
c) Penile urethra
d) Urethral meatus
Answer: b
24. Tip of the glans penis is called _______
a) ventral corpus spongiosum
b) dorsal corpora cavernosa
c) aperture
d) urinogenital aperture
Answer: d
The Female Reproductive System MCQ and Answers
25. The primary sex organ of female reproductive system is ______
a) fallopian tubes
b) ovaries
c) uterus
d) cervix
Answer: b
26. The ovaries are suspended by _______
a) fallopian tubes
b) ovarian walls
c) ligaments
d) mesovarium
Answer: d
27. Outermost layer of ovary is made up of ________
a) simple cuboidal cells
b) stereocilia
c) stroma
d) cilia
Answer: a
28. Stroma consists of an outer ovarian ________ and inner ovarian ________
a) medulla, cortex
b) cortex, medulla
c) tunica albuginea, stroma
d) stroma, stroma
Answer: b
29. The ovarian ______ has a white body or corpus albicans.
a) cortex
b) medulla
c) antrum
d) luteum
Answer: a
30. Ovarian Medulla contains many rounded or oval bodies, called _______
a) corpus luteum
b) ovarian follicles
c) corpus albicans
d) antrum
Answer: b
31. Fallopian tubes are also called as _______
a) oviducts
b) follicles
c) fimbriae
d) luteum
Answer: a
32. The opening of the infundibulum into the body cavity is called ______
a) isthmus
b) ampulla
c) ostium
d) thalamus
Answer: c
33. The last part of oviduct is called _________
a) isthmus
b) ampulla
c) ostium
d) thalamus
Answer: a
The Female External Genitalia MCQ and Answers
34. Among the following, which one is not included in the female external genitalia?
a) Clitoris
b) Mons pubis
c) Vagina
d) Hymen
Answer: c
35. Cushion of fatty tissue covered by skin and pubic hair – _______
a) Labia majora
b) Labia minora
c) Vulva
d) Mons pubis
Answer: d
36. Finger-like structure above the urethral opening is called ______
a) vulva
b) clitoris
c) vagina
d) labia minora
Answer: b
37. _______ glands are present on either side of the vaginal orifice.
a) Bartholin’s
b) Pineal
c) Ceruminous
d) Mammary
Answer: a
38. In olden days, _____ used to serve as an indicator of virginity.
a) hymen
b) vagina
c) vulva
d) clitoris
Answer: a
39. Sweat and sebaceous glands are present in the ______
a) Labia majora
b) Labia minora
c) Vaginal orifice
d) Mons pubis
Answer: a
40. _________ are folds of mucous membrane.
a) Labia majora
b) Labia minora
c) Vaginal orifice
d) Mons pubis
Answer: b
41. ________ equivalent to male scrotum.
a) Vaginal orifice
b) Hymen
c) Vagina
d) Labia majora
Answer: d
42. _________ provides passage for menstrual flow.
a) Vagina
b) Vulva
c) Clitoris
d) Mons pubis
Answer: a
Structure of a Mammary Gland MCQ and Answers
43. What kind of tissue is the mammary gland mainly made of?
a) Adipose tissue
b) Glandular tissue
c) Epithelial tissue
d) Connective tissue
Answer: b
44. Glandular tissues contain _____ at the ends.
a) alveoli
b) bronchioles
c) ampulla
d) lobule
Answer: a
45. What do the alveoli secrete?
a) Bile
b) Hemoglobin
c) Milk
d) Sweat
Answer: c
46. What does the alveoli open into?
a) Mammary glands
b) Mammary tubules
c) Mammary ducts
d) Glandular tissue
Answer: b
47. Mammary ducts join and form a wider mammary ______
a) ducts
b) tubules
c) ampulla
d) tissue
Answer: c
48. Yellow fluid that appears at the earliest stage of breast feeding is called __________
a) bile
b) milk
c) cholesterol
d) colostrum
Answer: d
49. Production of milk is called _________
a) Lactation
b) Galactorrhea
c) Lactorrhea
d) Galactation
Answer: a
50. What happens after the weaning of an infant?
a) Galactorrhea
b) Lactorrhea
c) Production of milk continues
d) Involution
Answer: d
Spermatogenesis MCQ and Answers
51. The onset of spermatogenesis starts at _________
a) puberty
b) birth
c) adulthood
d) intercourse
Answer: a
52. What is the process of conversion of spermatids to sperms called?
a) Spermiation
b) Spermatogenesis
c) Spermiogenesis
d) Meiosis
Answer: c
53. What is the process of release of sperms from Sertoli cells called?
a) Spermiation
b) Spermatogenesis
c) Spermiogenesis
d) Meiosis
Answer: a
54. A person with tetraploidy will have _______ set of chromosomes in their Spermatids.
a) haploid
b) triploid
c) diploid
d) polyploid
Answer: c
55. Which hypothalamic hormone is responsible for the onset of Spermatogenesis at puberty?
a) Gonadotrophin Releasing Hormone (GnRH)
b) Follicle Stimulating Hormone (FSH)
c) Luteinising Hormone (LH)
d) Testosterone
Answer: a
56. Testosterone belongs to a class of hormones called _________
a) Gonadotrophins
b) Androgens
c) Estrogens
d) Catecholamines
Answer: b
57. Which cells are responsible for the nourishment of spermatids while they mature to produce sperms?
a) Spermatogonia
b) Mother cells
c) Sertoli cells
d) Leydig cells
Answer: c
58. Identify the correct pair of hormone and its target cells in the context of spermatogenesis.
a) Gonadotrophin: Leydig cells
b) Luteinising Hormone: Sertoli cells
c) Testosterone: Pituitary gland
d) Follicle Stimulating Hormone: Sertoli cells
Answer: d
59. Which of the following is not a Gonadotrophin?
a) Testosterone
b) LH
c) FSH
d) GnRH
Answer: a
60. What part of sperm is attached to Sertoli cells prior to spermiation?
a) Tail
b) Head
c) Trunk
d) Body
Answer: b
Structure of a Sperm MCQ and Answers
61. The body of sperm is covered by _______
a) head
b) cell membrane
c) cell wall
d) cytoplasm
Answer: b
62. What part of sperm holds the haploid chromatin?
a) Acrosome
b) Head
c) Tail
d) Neck
Answer: b
63. Which of the following is not an essential feature of sperms that determine the fertility of a male?
a) Sperm count
b) Sperm motility
c) Sperm height
d) Sperm production rate
Answer: c
64. Sperms are produced in _______
a) vas deferens
b) vasa efferentia
c) rete testis
d) seminiferous tubules
Answer: d
65. What is the consequence of low sperm count?
a) Death
b) Infertility
c) Abortion
d) Pregnancy
Answer: b
66. The major constituents of semen are _____ and _____
a) Sperms and RBCs
b) Sperms and Blood plasma
c) Sperms and seminal plasma
d) Sperms and WBCs
Answer: c
67. What doesn’t constitute to the seminal plasma?
a) Secretion of epididymis
b) Secretion of vas deferens
c) Secretion of vas efferens
d) Secretion of seminal vesicle
Answer: c
68. What is not a function of the male sex hormone Testosterone?
a) Onset of spermatogenesis
b) Maintenance of accessory ducts
c) Release of semen
d) Maintenance of accessory glands
Answer: c
Oogenesis MCQ and Answers
69. The onset of oogenesis occurs during _________
a) puberty
b) birth
c) adulthood
d) embryonic development
Answer: d
70. What is the process of the formation of a mature female gamete called?
a) Menstruation
b) Spermatogenesis
c) Oogenesis
d) Ovulation
Answer: c
71. What is the stage of the cell cycle at which primary oocytes are arrested?
a) Prophase I
b) Metaphase I
c) Prophase II
d) Metaphase II
Answer: a
72. A person with tetraploidy will have _______ set of chromosomes in their first polar body.
a) haploid
b) triploid
c) diploid
d) polyploid
Answer: c
73. The division of primary oocyte into the secondary oocyte and first polar body is an example of _______
a) symmetric division
b) asymmetric division
c) Cell death
d) asexual reproduction
Answer: b
74. What are the cells that primary oocyte divides into called?
a) Secondary oocyte and first polar body
b) Secondary oocyte and second polar body
c) First polar body and second polar body
d) Ovum and second polar body
Answer: a
75. What are the cells that secondary oocyte divides into called?
a) Ovum and first polar body
b) Ovum and second polar body
c) First polar body and second polar body
d) Primary oocyte and second polar body
Answer: b
76. Which of the following is the correct set of ploidy and cell type?
a) Primary oocyte: Diploid; Secondary oocyte: Haploid; Ovum: Haploid
b) Primary oocyte: Haploid; Secondary oocyte: Haploid; Ovum: Haploid
c) Oogonium: Diploid; Primary oocyte: Diploid; Secondary oocyte: Diploid
d) Oogonium: Diploid; Primary oocyte: Haploid; Secondary oocyte: Haploid
Answer: a
77. What stage is the oocyte released from the ovary?
a) Primary oocyte
b) Secondary oocyte
c) Tertiary oocyte
d) Ovum
Answer: b
78. The membrane surrounding secondary oocyte is _______
a) Theca interna
b) Granulosa
c) Zona pellucida
d) Theca externa
Answer: c
Structure of an Ovary MCQ and Answers
79. What cells, along with primary oocyte, make a primary follicle?
a) Granulosa cells
b) Sertoli cells
c) Secondary oocytes
d) Oogonia
Answer: a
80. In addition to granulosa cells, what additional component is added to a primary follicle to transform it into a secondary follicle?
a) Oogonia
b) Antrum
c) Theca
d) Secondary oocyte
Answer: c
81. The distinguishing characteristic of a tertiary follicle is a fluid-filled cavity called ________
a) Theca
b) Granulosa
c) Zona pellucida
d) Antrum
Answer: d
82. The first round of meiosis of oogonium is completed in which follicle?
a) Graafian follicle
b) Primary follicle
c) Secondary follicle
d) Tertiary follicle
Answer: d
83. The mature follicle that holds the secondary oocyte before release from the ovary is called _________
a) graafian follicle
b) primary follicle
c) secondary follicle
d) tertiary follicle
Answer: a
84. What are the white remains of the Graafian follicle left after its rupture called?
a) Corpus luteum
b) Corpus callosum
c) Corpus delicti
d) Corpus handi
Answer: a
85. The ovarian stroma is composed of which two components?
a) External cortex and internal medulla
b) External medulla and internal cortex
c) External epithelium and internal medulla
d) External epithelium and internal cortex
Answer: a
86. Which of the following is not the function of the ovary?
a) Release the female gamete for fertilization
b) Produce female sex hormones
c) Provide a hostile environment for the development of the embryo
d) Protection and development of the egg
Answer: c
Menstrual Cycle MCQ and Answers
87. Primate female reproductive cycle is called ________
a) menstrual cycle
b) water cycle
c) blood cycle
d) ovarian cycle
Answer: a
88. The first menstrual flow is called as ___________
a) Menopause
b) Menstruation
c) Menarche
d) Ovulation
Answer: c
89. The onset of the menstrual cycle is characterized by a discharge of blood and tissue matter from the uterus. What is this discharge termed as?
a) Egg
b) Menarche
c) Menses
d) Ovulation
Answer: c
90. What layer of the uterus is shredded during menstruation?
a) Perimetrium
b) Myometrium
c) Epimetrium
d) Endometrium
Answer: d
91. Which of the following can lead to a menstrual cycle?
a) Fertilization of egg
b) Unfertilized egg
c) Improper sleep
d) Study pressure
Answer: b
92. Which of the following will not result in a miss in the menstrual cycle?
a) Fertilization of the egg
b) Anxiety and stress
c) Bad health
d) Gyming
Answer: d
93. The phase during which menses occur is called _______
a) primary phase
b) follicular phase
c) menstrual phase
d) luteal phase
Answer: c
94 The follicular phase is also called as __________
a) menstrual phase
b) luteal phase
c) proliferative phase
d) secretory phase
Answer: c
95. During what phase of menstrual cycle are primary follicles converted to Graafian follicles?
a) Menstrual phase
b) Follicular phase
c) Luteal phase
d) Secretory phase
Answer: b
96. The regeneration of uterine wall begins during what phase?
a) Menstrual phase
b) Follicular phase
c) Luteal phase
d) Secretory phase
Answer: b
97. What pituitary hormones peak during the proliferative phase?
a) LH only
b) FSH only
c) Neither LH or FSH
d) LH and FSH
Answer: d
98. Which of the following does not occur during the follicular phase?
a) Maturation of primary follicles to Graafian follicles
b) Peaking of estrogen
c) Peaking of progesterone
d) Regeneration of uterine endometrium
Answer: c
99. The luteal phase is also called as ______
a) secretory phase
b) proliferative phase
c) menstrual phase
d) follicular phase
Answer: a
100. Which hormone surge triggers ovulation?
a) Estrogen
b) LH
c) FSH
d) Progesterone
Answer: b
101. Luteal phase is characterized by the conversion of a ruptured Graafian follicle into _______
a) corpus luteum
b) corpus albicans
c) corpora quadrigemina
d) primary follicle
Answer: a
102. What hormone is responsible for the maintenance of endometrium?
a) Estrogen
b) LH
c) FSH
d) Progesterone
Answer: d
103. What part of ovary secretes progesterone?
a) Medulla
b) Epithelial covering
c) Graafian follicle
d) Corpeus luteum
Answer: d
104. What is the fate of corpus luteum in case of unfertilized egg?
a) Rapid proliferation
b) Degeneration
c) Secretion of progesterone
d) Onset of next menstrual cycle
Answer: b
105. The end of menstrual cycle is called _______
a) Menarche
b) Menopause
c) Menses
d) Ovulation
Answer: b
106. Which hormone elevates twice during a menstrual cycle?
a) LH
b) FSH
c) Estrogen
d) Progesterone
Answer: c
Fertilisation MCQ and Answers
107. The population of vagina with semen during coitus is called as _______
a) Insemination
b) Outsemination
c) Copulation
d) Fertilization
Answer: a
108. What is the correct order of travel of sperm through the female reproductive tract before it reaches the egg?
a) Vagina -> Fallopian tube -> Uterus -> Cervix
b) Vagina -> Cervix -> Uterus -> Oviduct
c) Vagina -> Uterus -> Cervix -> Oviduct
d) Vagina -> Fallopian tube -> Cervix -> Uterus
Answer: b
109. What part of the oviduct does the sperm encounter the egg?
a) Ampulla
b) Isthmus
c) Infundibulum
d) Fundus
Answer: a
110. During a menstrual cycle, copulation on which of the following phases has the least probability of fertilizing an egg?
a) Menstrual phase
b) Onset of follicular phase
c) End of the follicular phase
d) End of the luteal phase
Answer: c
111. What is fertilization?
a) Release of egg from ovary
b) Release of sperm from testis
c) Mixing of semen with vaginal fluid
d) Fusion of sperm with egg nuclei
Answer: d
112. What layer of egg cell prevents entry of other sperms?
a) Corpus luteum
b) Zona pellucida
c) Endometrium
d) Corona radiata
Answer: b
113. What triggers the completion of meiosis of secondary oocyte?
a) Maturation of Graafian follicle
b) Entry of sperm into the egg cell
c) Release of estrogen
d) Coitus
Answer: b
114. The haploid ovum is also called as _____________
a) oogonium
b) oocyte
c) ootid
d) osteoid
Answer: c
115. The fusion of haploid sperm and egg nuclei during fertilization leads to formation of a __________
a) haploid zygote
b) diploid zygote
c) haploid embryo
d) diploid embryo
Answer: b
116. At what stage of development is the sex of the human baby determined?
a) Zygote
b) Embryo
c) Fetus
d) Puberty
Answer: a
117. Which of the following is the correct number of chromosomes based on the cell type?
a) Sperm: 23; Egg: 23; Zygote: 23
b) Sperm: 46; Egg: 46; Zygote: 46
c) Sperm: 23; Egg: 23; Zygote: 46
d) Sperm: 46; Egg: 46; Zygote: 23
Answer: c
118. The sex of the human baby is male if ______
a) sperm has X chromosome
b) sperm has Y chromosome
c) ovum has X chromosome
d) ovum has Y chromosome
Answer: b
119. Which of the following is not a layer that the sperm has to encounter before reaching the egg nuclei?
a) Zona pellucida
b) Corona radiata
c) Perivitelline space
d) Zona radiata
Answer: d
Implantation MCQ and Answers
120. What are the mitotic divisions that a zygote undergoes called?
a) Meiosis
b) Cleavage
c) Fertilization
d) Fetal development
Answer: b
121. The daughter cells formed as a result of cleavage of a zygote are called ________
a) Blastocysts
b) Blastula
c) Blastomeres
d) Blastocoel
Answer: c
122. What is the correct lineage of a zygote?
a) Zygote -> Blastomere -> Morula -> Blastocyst
b) Zygote -> Blastula -> Morula -> Blastocyst
c) Zygote -> Morula -> Blastomere -> Blastula
d) Zygote -> Blastocyst -> Blastula -> Blastomere
Answer: a
123. What is the outer layer of blastocyst called?
a) Blastomere
b) Trophoblast
c) Blastocoel
d) Inner cell mass
Answer: b
124. Which layer of blastomere gets attached to the endometrium of the uterus?
a) Blastomere
b) Trophoblast
c) Blastocoel
d) Inner cell mass
Answer: b
125. What does inner cell mass give rise to?
a) Trophoblast
b) Endometrium
c) Placenta
d) Embryo
Answer: d
126. The embryo is derived from _________
a) uterine wall
b) trophoblast
c) inner cell mass
d) blastocoel
Answer: c
127. What is implantation?
a) Attachment of umbilical cord to the developing fetus
b) The fusion of male and female gametes
c) Covering of the blastomere by the uterine wall
d) Rapid division of the zygote
Answer: c
128. The last process that leads to pregnancy is called _________
a) fertilization
b) cleavage
c) lactation
d) implantation
Answer: d
129. Eight to sixteen cell stage embryo is called ______
a) Blastomere
b) Zygote
c) Blastula
d) Morula
Answer: d
130. The cavity present in the blastula is called _______
a) Coelom
b) Fluid
c) Blastocoel
d) Blastopore
Answer: c
Pregnancy and Embryonic Development MCQ and Answers
131. What are the finger-like projections of trophoblast called?
a) Endometrium
b) Placenta
c) Chorionic villi
d) Fetus
Answer: b
132. Chorionic villi and uterine tissue fuse to form ________
a) Zygote
b) Blastula
c) Placenta
d) Endometrium
Answer: c
133. What tissue is derived from two different organisms?
a) Placenta
b) Endometrium
c) Zygote
d) Gamete
Answer: a
134. Which of the following is not the function of a placenta?
a) Supply of nutrients to the fetus
b) Removal of excretory products from the fetus
c) Supply of carbon dioxide to the fetus
d) Supply of oxygen to the fetus
Answer: c
135. What connects the placenta to the embryo?
a) Trophoblast
b) Umbilical cord
c) Chorionic villi
d) Endometrium
Answer: b
136. Which of the following hormone is not produced by the placenta?
a) Relaxin
b) Estrogen
c) Progesterone
d) hPL
Answer: a
137. Which hormone is produced by ovary only during pregnancy?
a) Progesterone
b) Chorionic gonadotrophin
c) Relaxin
d) Placental lactogen
Answer: c
138. A scientist was looking at using different hormones in the blood as a marker for pregnancy. Which of the following hormones will not be ideal for this?
a) Progesterone
b) Chorionic gonadotrophin
c) Relaxin
d) Placental lactogen
Answer: a
139. Which organ is the first to form in the developing human fetus, formed after just 1 month of pregnancy?
a) Heart
b) Brain
c) Kidney
d) Liver
Answer: a
140. External genital organs are developed during _________
a) first month of pregnancy
b) first trimester
c) second trimester
d) third trimester
Answer: b
141. Fetal movements can be observed during ____________
a) first month of pregnancy
b) first trimester
c) second trimester
d) third trimester
Answer: c
142. Which of these is not an associated function of the increased maternal hormones estrogen, progesterone, prolactin, and cortisol?
a) Development of fetus
b) Metabolic changes in the mother
c) Maintenance of pregnancy
d) Lactation
Answer: d
143. Implantation is followed by the differentiation of inner cell mass into outer _______ and inner ______
a) ectoderm, endoderm
b) ectoderm, mesoderm
c) ectoderm, mesendoderm
d) mesoderm, endoderm
Answer: a
144. What layer separates ectoderm from the endoderm in the developing fetus?
a) Mesenchyme
b) Mesendoderm
c) Mesoderm
d) Placenta
Answer: c
145. The ability of a cell to differentiate is called ______
a) potential
b) potency
c) stemness
d) development
Answer: b
146. The cells within the inner cell mass that possess the ability to give rise to the entire organism are called _______
a) placental cells
b) stem cells
c) mother cells
d) zygote
Answer: b
147. Heart is derived from ______
a) Mesoderm
b) Endoderm
c) Ectoderm
d) Mesenchyme
Answer: a
Parturition and Lactation MCQ and Answers
148. The act of delivering a fetus at the end of pregnancy is called ________
a) lactation
b) pregnancy
c) parturition
d) coitus
Answer: c
149. Vigorous contractions of the uterus during parturition are induced by ________
a) neuroendocrine mechanism
b) endocrine mechanism
c) embryo pushing out
d) uterine fluids
Answer: a
150. What is the correct sequence for parturition to occur?
a) Signal from fetus and placenta → Uterine contractions → Release of oxytocin → Rise in oxytocin secretion → Powerful contractions → Parturition
b) Uterine contractions → Release of oxytocin → Rise in oxytocin secretion → Powerful contractions → Signal from fetus and placenta → Parturition
c) Signal from fetus and placenta → Release of oxytocin → Uterine contractions → Rise in oxytocin secretion → Powerful contractions → Parturition
d) Release of oxytocin → Uterine contractions → Signal from fetus and placenta → Rise in oxytocin secretion → Powerful contractions → Parturition
Answer: c
151. What is injected to induce delivery in humans?
a) Estrogen
b) Oxytocin
c) Progesterone
d) Relaxin
Answer: b
152. Production of milk by mammary glands of female towards the end of pregnancy is called _________
a) lactation
b) parturition
c) colostrum
d) coitus
Answer: a
153. What is the milk produced in the initial few days of lactation called?
a) Corpus luteum
b) Colostrum
c) Corpus albicans
d) Lactum
Answer: b
154. What is colostrum rich in?
a) Blood
b) Antigens
c) Antibodies
d) Life fluid
Answer: c
155. Antibodies in colostrum provide new-borns with__________
a) immunity
b) long life
c) death
d) tall height
Answer: a
156. What is the period of pregnancy called?
a) Delivery
b) Menstrual cycle
c) Coitus
d) Gestation
Answer: d
157. What is the reflex that leads to the expulsion of baby called?
a) Feet withdrawal reflex
b) Knee jerk reflex
c) Fetal ejection reflex
d) Oxytocin reflex
Answer: c
FAQs on Human Reproduction
1. What is the most important function of the reproductive system?
Answer: The most important function of the reproductive system is to produce offspring.
2. What are the organs of the female reproductive system?
Answer: The organs of the female reproductive system include the ovaries, fallopian tubes, and the uterus.
3. What are the organs of the male reproductive system?
Answer: The organs of the male reproductive system include the testes, epididymis, vas deferens, and the penis.
4. What is gametogenesis?
Answer: Gametogenesis is the process by which gametes, or sex cells, are produced.
5. What is fertilization?
Answer: Fertilization is the process by which a sperm cell and an egg cell fuse to form a zygote.