MCQs On Sexual Reproduction in Humans For NEET, AIIMS and JIPMER
Here We discuss about sexually reproduction in humans all objective types of questions and answer and class 12 biology Human reproduction involves sexual intercourse between a man and a woman. Human Reproduction Questions and Answers made by thelivelearns team are the most important part of NEET and others Competitive Exams. These objective questions of human reproduction are prepared from NCERT. Here we also covers all human reproduction important question which are asked in previous years in NEET, AIIMS, JIPMER exam.
51. The ________ is an ovoviviparous animal
(A) Basking shark
(B) Bonobo
(C) Blue shark
(D) None of the above
Answer: Basking shark
52. Graffian follicle is formed from:
(A) Primary follicle
(B) Secondary follicle
(C) Tertiary follicle
(D) None
Answer: Tertiary follicle
53. Polarbodies are formed during:
(A) Spermatogenesis
(B) Oogenesis
(C) Embryogenesis
(D) All
Answer: Oogenesis
54. What is common in both sperms and ovum?
(A) Haploidity
(B) Diploidity
(C) Polyploidity
(D) Presence of acrosome
Answer: Haploidity
55. First meiotic division during oogenesis takes place:
(A) After ovulation
(B) Prior to ovulation
(C) During embryogenesis
(D) None
Answer: After ovulation
56. Appearance of first menstruation at puberty is called:
(A) Menopause
(B) Menarche
(C) Fertility
(D) Sterility
Answer: Menarche
57. Luteal phase during a menstrual cycle is also known as:
(A) Proliferative phase
(B) Secretory phase
(C) Reductive phase
(D) Regenerative phase
Answer: Secretory phase
58. Function of corpus luteum is to secrete:
(A) Progesterone
(B) Estrogen
(C) Testosterone
(D) All
Answer: Progesterone
59. Cessation of menstrual cycle is termed as:
(A) Menarche
(B) Menopause
(C) Sterility
(D) Abortion
Answer: Menopause
60. Whether human females are:
(A) Homogametic
(B) Heterogametic
(C) Agametic
(D) Monogametic
Answer: Homogametic
61. Colostrum is rich in:
(A) Antigens
(B) Antibodies
(C) Interferons
(D) All
Answer: Antibodies
62. What is the function of oxytocin is:
(A) Contraction of uterine muscles
(B) To lower the blood pressure
(C) To secrete milk
(D) To expand the ligament
Answer: Contraction of uterine muscles
63. Milk in mammary glands is secreted by:
(A) Acinar cells
(B) Hepatic cells
(C) Chondrocytes
(D) Cells of alveoli
Answer: Cells of alveoli
64. A crosome is a part of:
(A) Chromosome
(B) Ribosome
(C) Oxysome
(D) Spermatozoan
Answer: Spermatozoan
65. What would be the fate of menstruation if the ovum is not fertilized?
(A) Occurs for 3-5 days
(B) Does not occur
(C) Occurs for 5-10 days
(D) Occurs irregularly
Answer: Occurs for 3-5 days
66. Umbilical lies between:
(A) Embryo and placenta
(B) Perimetrium and ovary
(C) vary and fallopian tube
(D) Placenta and ovary
Answer: Embryo and placenta
67. Relaxin is secreted by:
(A) Endometrium
(B) Ovary
(C) Pituitary gland
(D) Hypothalamus
Answer: Ovary
68. Uterus is commonly called as:
(A) Body cavity
(B) Womb
(C) Stomach
(D) Bladder
Answer: Womb
69. Number of testicular lobules found in each testis is:
(A) 50
(B) 100
(C) 150
(D) 250
Answer: 250
70. Number of mammary lobes in each mammary gland is:
(A) 15-20
(B) 50-100
(C) 100-150
(D) 200
Answer: 15-20
71. The cells of morula are known as:
(A) Blastocysts
(B) Oviblasts
(C) Oviclasts
(D) Blastomeres
Answer: Oviblasts
72. Corona radiate lies:
(A) External to the zona pellucida
(B) Internal to the zona pellucida
(C) Along with periviteline space
(D) A & C
Answer: External to the zona pellucida
73. Which part of the blastocyst attaches with the surface of endometrium?
(A) Inner cell mass
(B) Trophoblast
(C) Ectoderm
(D) Mesoderm
Answer: Trophoblast
74. The nature of post zygotic divisions is of:
(A) Amitotic
(B) Mitotic
(C) Meiotic
(D) Iregular
Answer: Mitotic
75. Chorionc villi appear on:
(A) Endometrium
(B) Trophoblast
(C) Myometrium
(D) Perimetrium
Answer: Trophoblast
76. Which of the following is a placental homone?
(A) Human chorionic gonadotropin
(B) Relaxin
(C) Oxytocin
(D) None
Answer: Human chorionic gonadotropin
77. Stem cells are the part of:
(A) Inner cell mass
(B) Ectoderm
(C) Endoderm
(D) Mesoderm
Answer: Inner cell mass
78. First trimester period is:
(A) 12 weeks
(B) 24 weeks
(C) 36 weeks
(D) 4 weeks
Answer: 12 weeks
79. The first appearance of limbs and external genitalia take place during:
(A) 1st trimester
(B) 2nd trimester
(C) 3d trimester
(D) None
Answer: 1st trimester
80. Delivery of the fetus after 9 months is known as:
(A) Gestation
(B) Gastrulation
(C) Parturition
(D) Implantation
Answer: Parturition
81. The _________ is a temporary organ that connects a mammalian mother to its foetus
(A) Placenta
(B) Chorion
(C) Endometrium
(D) None of the above
Answer: Placenta
82. Division of human egg is __________
(A) Holoblastic and unequal
(B) Meroblastic
(C) Holoblastic and equal
(D) Isoblastic
Answer: Holoblastic and unequal
83. The lytic enzyme released y sperm is _________
(A) Ligase
(B) Acrosome
(C) Androgamone
(D) Hyaluronidase
Answer: Hyaluronidase
84. Number of autosomes in human primary spermatocyte is _________
(A) 46
(B) 44
(C) 23
(D) 22
Answer: 44
85. Ovum receives the sperm in the region of _________
(A) Animal pole
(B) Equator
(C) Vegetal pole
(D) Pigmented area
Answer: Vegetal pole
86. Which of the following organ is devoid of gland?
(A) Vulva
(B) Oviduct
(C) Uterus
(D) Vagina
Answer: Oviduct
87. Among the following stem cells which are found in the umbilical cord?
(A) Embryonic stem cells
(B) Adult stem cells
(C) Cord blood stem cells
(D) Blood stem cells
Answer: Cord blood stem cells
88. Human sperm moves with the help of _________
(A) Cilia
(B) Flagellum
(C) Basal body
(D) Nucleosome
Answer: Flagellum
89. Cryptorchidism is a condition in which _________
(A) Male hormones are not reactive
(B) Ovaries are removed
(C) Sperms are not formed
(D) Testes fail to descend in scrotal sacs
Answer: thoracic cavity from abdominal cavity
90. Bidder’s canal is meant for the passage of _________
(A) Sperms
(B) Urine
(C) Ova
(D) Saline
Answer: Sperms
91. Lower narrow end of uterus is called
(a) urethra
(b) cervix
(c) clitoris
(d) vulva.
Answer: (b) cervix
92.Bartholin’s glands are situated
(a) on the either side of vagina in humans
(b) on either side of vas deferens in humans
(c) on either side of penis in humans
(d) on either side of Fallopian tube in humans.
Answer: (a) on the either side of vagina in humans
93. In human adult females oxytocin
(a) stimulates pituitary to secrete vasopressin
(b) causes strong uterine contractions during parturition
(c) is secreted by anterior pituitary
(d) stimulates growth of mammary glands.
Answer: (b) causes strong uterine contractions during parturition
94. The third stage of parturition is called “after-birth”. In this stage
(a) excessive bleeding occurs
(b) fetus is bom and cervix and vagina contraction to normal condition happens
(c) fetus is bom and contraction of uterine wall prevents excessive bleeding
(d) placenta is expelled out.
Answer:(d) placenta is expelled out.
95.After birth, colostrum is released from mammary glands which is rich in
(a) fat and low in proteins
(b) proteins and low in fat
(c) proteins, antibodies and low in fat
(d) proteins, fat and low in antibodies.
Answer: (c) proteins, antibodies and low in fat
96. Spot the odd one out from the following structures with reference to the male reproductive system.
(a) Rate testis
(b) Epididymis
(c) Vasa efferentia
(d) Isthmus
Answer: (d) Isthmus
97. Seminal plasma, the fluid part of semen, is contributed by
(i) seminal vesicle
(ii) prostate
(iii) urethra
(iv) bulbourethral gland
(a) (i) and (ii)
(b) (i), (ii) and (iv)
(c) (ii), (iii) and (iv)
(d) (i) and (iv)
Answer: (b) (i), (ii) and (iv)
98. In humans, at the end of the first meiotic division, the male germ cells differentiate into the
(a) spermatids
(b) spermatogonia
(c) primary spermatocytes
(d) secondary spermatocytes.
Answer: (d) secondary spermatocytes.
99. How many sperms are formed from a secondary spermatocyte ?
(a) 4
(b) 8
(c) 2
(d) 1
Answer: (c) 2
100. How many sperms are formed from 4 primary spermatocytes ?
(a) 4
(b) 1
(c) 16
(d) 32
Answer: (c) 16