NEET Biology Human Reproduction Question Bank

done Critical Thinking Questions Total Questions - 81

• question_answer1)
  In most of the mammals the testes are situated outside the abdominal cavity because [CPMT 1987; Kerala PMT 2005]
  A)
  Sperms produced in scrotal sac are more in number done clear
  B)
  Sperms produced in abdominal cavity are provided with less motility done clear
  C)
  Sperms producd in scrotal sac require lesser temperature for their best fertilization capacity done clear
  D)
  Sperms produced in scrotal sac are bigger done clear
  View Solution play_arrow

• question_answer2)
  The correct order of the reproductive tract of a male human being is [DPMT 1992]
  A)
  Rete testis, epididymis, vasa efferentia, urethra done clear
  B)
  Rete testis, vasa efferentia, epididymis, urethra done clear
  C)
  Vasa efferentia, epididymis, urethra, rete testis done clear
  D)
  Urethra, rete testis, epididymis, vasa efferentia done clear
  View Solution play_arrow

• question_answer3)
  Failure of descending testis into scrotum is known as [CPMT 1980; AIIMS 1980, 83; DPMT 1993]
  A)
  Impotency done clear
  B)
  Cryptorchidism done clear
  C)
  Castration done clear
  D)
  Paedogenesis done clear
  View Solution play_arrow

• question_answer4)
  Which of the following cells are present in mammalian testes and help to nourish sperms [AFMC 1997; KCET 2001; CPMT 2003; Kerala CET 2003]
  A)
  Leydig cells done clear
  B)
  Oxyntic cells done clear
  C)
  Interstitial cells done clear
  D)
  Sertoli cells done clear
  View Solution play_arrow

• question_answer5)
  Cumulus covers [AIIMS 1999]
  A)
  Ovary done clear
  B)
  Ovum done clear
  C)
  Embryo done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer6)
  In rabbit, ex-abdominal reproductive organs are   [RPMT 2001]
  A)
  Testes, Penis, Epididymis done clear
  B)
  Testes, Vas deferens, Testes sac done clear
  C)
  Testes, Vas deferens, Ejaculatin duct done clear
  D)
  Testes sac, Seminal Vesicle, Epididymis done clear
  View Solution play_arrow

• question_answer7)
  Clitoris in mammals is [DPMT 1985; CPMT 1980, 84, 93; BHU 1985; MP PMT 1993; RPMT 2001]
  A)
  Homologous to penis done clear
  B)
  Analogous to penis done clear
  C)
  Functional penis in female done clear
  D)
  Non-functional penis in male done clear
  View Solution play_arrow

• question_answer8)
  Vulva is enclosed by
  A)
  Vaginal orifice done clear
  B)
  Clitoris done clear
  C)
  Labia majora done clear
  D)
  Labia majora and minora both done clear
  View Solution play_arrow

• question_answer9)
  If ovaries of a pregnant mammal are removed
  A)
  The embryonic development will stop done clear
  B)
  Embryo will regenerate done clear
  C)
  Development remains unaffected done clear
  D)
  Ovaries will regenerate done clear
  View Solution play_arrow

• question_answer10)
  Ostium is provided with a number of finger like processes fimbriae
  A)
  For receiving ovum done clear
  B)
  To increase the catching area done clear
  C)
  [a] and [b] both done clear
  D)
  To secrete hormones done clear
  View Solution play_arrow

• question_answer11)
  Ovulation occurs
  A)
  Alternately from two ovaries done clear
  B)
  Simultaneously from both the ovaries done clear
  C)
  From one ovary alone throughout the life done clear
  D)
  According to the season from two ovaries done clear
  View Solution play_arrow

• question_answer12)
  Precocious puberty is
  A)
  Delayed puberty done clear
  B)
  Puberty attained before the normal age done clear
  C)
  Normal puberty done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer13)
  Implantation or uterine attachment of the blastocyst presumably occurs between
  A)
  and  days after ovulation done clear
  B)
   and  days after ovulation done clear
  C)
  and  days after ovulation done clear
  D)
   and  days after ovulation done clear
  View Solution play_arrow

• question_answer14)
  Atretic follicles are found in the [MP PMT 1996, 2002]
  A)
  Liver done clear
  B)
  Testis done clear
  C)
  Thymus done clear
  D)
  Ovary done clear
  View Solution play_arrow

• question_answer15)
  Secretion of progesterone by corpus luteum is initiated by [CBSE PMT 1999]
  A)
  LH done clear
  B)
  MSH done clear
  C)
  Testosterone done clear
  D)
  Thyroxine done clear
  View Solution play_arrow

• question_answer16)
  Onset of menstruation is due to [DPMT 2003]
  A)
  Fall in level of progesterone done clear
  B)
  Increase in level of progesterone done clear
  C)
  Increase in level of FSH done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer17)
  The phase of menstrual cycle in humans that last for 7-8 days is [AIIMS 2003]
  A)
  Follicular phase done clear
  B)
  Ovulatory phase done clear
  C)
  Luteal phase done clear
  D)
  Menstruation done clear
  View Solution play_arrow

• question_answer18)
  The region where sperm enters the egg is called [NCERT 1972; CPMT 1974; RPMT 2001, 02]
  A)
  Equator done clear
  B)
  Receptor cone done clear
  C)
  Animal pole done clear
  D)
  Vegetal pole done clear
  View Solution play_arrow

• question_answer19)
  Fraternal twins in man are produced when   [CMC Vellore 1993]
  A)
  Two sperms fertilize an ovum and the first two blastomeres separate from each other done clear
  B)
  One sperm fertilizes an ovum and first two blastomeres separate from each other done clear
  C)
  Egg develops parthenogenetically and first two blastomeres separate from each other done clear
  D)
  Two ova are fertilized simultaneously done clear
  View Solution play_arrow

• question_answer20)
  The chemical substance found in the surface layer of cytoplasm of spermatozoa is [MP PMT 1994]
  A)
  Fertilizin done clear
  B)
  Agglutinin done clear
  C)
  Antifertilizin done clear
  D)
  Hyaluronidase done clear
  View Solution play_arrow

• question_answer21)
  Fertilization restores [MP PMT 1994]
  A)
  Haploidy from diploidy done clear
  B)
  Diploidy from polyploidy done clear
  C)
  Polyploidy from diploidy done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer22)
  Polyspermy refers to
  A)
  Formation of many sperms by a male done clear
  B)
  Changes in sperm nucleus done clear
  C)
  Formation of many sperms done clear
  D)
  Penetration of many sperms into an ovum simultaneously done clear
  View Solution play_arrow

• question_answer23)
  At what stage the primitive streak in the chick embryo is formed
  A)
  12 hours incubation done clear
  B)
  18 hours incubation done clear
  C)
  72 hours incubation done clear
  D)
  24 hours incubation done clear
  View Solution play_arrow

• question_answer24)
  Which of the following statement is not correct
  A)
  Fertilizin of one species of animal will react with antifertilizin of another species done clear
  B)
  Fertilizin of one species of animal will react with the antifertilizin of the same species done clear
  C)
  Fertilizin is a glycoprotein and antifertilizins are acid proteins done clear
  D)
  Molecular weight of fertilizin is about 3,00,000 and antifertilizin 10,000 done clear
  View Solution play_arrow

• question_answer25)
  External stimulus which induces cleavage in an unfertilized ovum is called
  A)
  Fertilization done clear
  B)
  Chemotaxis done clear
  C)
  Paedogenesis done clear
  D)
  Neoteny done clear
  View Solution play_arrow

• question_answer26)
  Which one of the following is the effect of higher on the sperms
  A)
  Sperms become sluggish with longer life done clear
  B)
  Sperms become less active with short life done clear
  C)
  Sperms become highly active with longer life done clear
  D)
  No effect done clear
  View Solution play_arrow

• question_answer27)
  The first meiotic division in the oogonium is completed when the egg is within the
  A)
  Uterus done clear
  B)
  Follicle done clear
  C)
  Fallopian tube done clear
  D)
  Ovary, before it is surrounded by follicles done clear
  View Solution play_arrow

• question_answer28)
  The point of sperm entry during fertilization forms [MP PMT 1998]
  A)
  Centre of rotation of embryo done clear
  B)
  Axis of cleavage done clear
  C)
  Grey crescent done clear
  D)
  Dorsal lip of blastopore done clear
  View Solution play_arrow

• question_answer29)
  Which statement is correct for fertilization [RPMT 2001]
  A)
  Restore Euploidy done clear
  B)
  Brings male & female gametes together done clear
  C)
  Entry of whole sperm in egg done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer30)
  Which distinguishes a morula from a blastula   [MP PMT 1992]
  A)
  Presence of more yolk done clear
  B)
  Absence of yolk done clear
  C)
  Presence of a cavity done clear
  D)
  Absence of a cavity done clear
  View Solution play_arrow

• question_answer31)
  Holoblastic cleavage may occur in eggs which are [AIIMS 1987; MP PMT 1994]
  A)
  Oligolecithal only done clear
  B)
  Mesolecithal only done clear
  C)
  Macrolecithal only done clear
  D)
  Oligolecithal and mesolecithal both done clear
  View Solution play_arrow

• question_answer32)
  Embryologists can presume the future organs of the embryo in [CPMT 1980; CBSE PMT 1993]
  A)
  Blastula done clear
  B)
  Early gastrula done clear
  C)
  Morula done clear
  D)
  Post gastrula done clear
  View Solution play_arrow

• question_answer33)
  The fluid filled in the blastocoel cavity of blastula is [CPMT 1988; AIIMS 1993]
  A)
  Acidic done clear
  B)
  Albuminous done clear
  C)
  Saline done clear
  D)
  Pure water done clear
  View Solution play_arrow

• question_answer34)
  In a mesolecithal egg, one would expect [DPMT 1976]
  A)
  Meroblastic cleavage done clear
  B)
  Unequal holoblastic cleavage done clear
  C)
  Equal holoblastic cleavage done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer35)
  During the fourth and sixth cleavage of the zygote [AIIMS 1993]
  A)
  Mesomeres give rise to endoderm done clear
  B)
  Micromeres give rise to ectoderm done clear
  C)
  Mesomeres give rise to mesoderm done clear
  D)
  Macromeres give rise to ectoderm done clear
  View Solution play_arrow

• question_answer36)
  What is true about cells during cleavage [CBSE PMT 1991]
  A)
  They move from animal pole to vegetal pole done clear
  B)
  They do not grow in size done clear
  C)
  They consume little done clear
  D)
  Their divisions resemble ordinary mitosis done clear
  View Solution play_arrow

• question_answer37)
  The solid mass of cells formed at the end of cleavage of mammalian egg is [MP PMT 1994]
  A)
  Blastula done clear
  B)
  Morula done clear
  C)
  Blastocyst done clear
  D)
  Blastodisc done clear
  View Solution play_arrow

• question_answer38)
  The type of blastula formed in birds is [MP PMT 1994; RPMT 1999]
  A)
  Teloblastula done clear
  B)
  Holoblastula done clear
  C)
  Coeloblastula done clear
  D)
  Discoblastula done clear
  View Solution play_arrow

• question_answer39)
  In mature oocytes cortical granules are formed on which side of plasmalemma
  A)
  Outer done clear
  B)
  Inner done clear
  C)
  Upper done clear
  D)
  All the sides done clear
  View Solution play_arrow

• question_answer40)
  During cleavage DNA synthesis
  A)
  Increases done clear
  B)
  Decreases done clear
  C)
  Stops done clear
  D)
  Remains the same done clear
  View Solution play_arrow

• question_answer41)
  Of the following animals which produces the smallest egg
  A)
  Humming bird done clear
  B)
  Salmon done clear
  C)
  Blue whale done clear
  D)
  American toad done clear
  View Solution play_arrow

• question_answer42)
  Spiral cleavage is found in
  A)
  Synapta done clear
  B)
  Amphibia done clear
  C)
  Nematoda, annelida and rotifera etc. done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer43)
  Which of the following is not evident that the pattern of cleavage is determined by factors in the egg cytoplasm rather than by genes of zygote
  A)
  Cleavage is prevented by injection of a protein synthesis inhibitor done clear
  B)
  Cleavage is not affected by injection of inhibitors of RNA synthesis into the zygote done clear
  C)
  Interspecific hybrid zygotes go through normal cleavag but die at the beginning of gastrulation done clear
  D)
  The direction of the first division of cleavage in the snail Cepaea is determined by the mothers genotype done clear
  View Solution play_arrow

• question_answer44)
  Which of the following structure is found in blastula [CPMT 1995]
  A)
  Segmentation cavity done clear
  B)
  Notochord done clear
  C)
  Gill done clear
  D)
  Tail done clear
  View Solution play_arrow

• question_answer45)
  Which of the following cannot pass through the placenta into the foetus
  A)
  Bacteria of syphilis done clear
  B)
  Thalidomide done clear
  C)
  Virus of German measles done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer46)
  The blastula of prototherians is called
  A)
  Blastocyst done clear
  B)
  Stereoblastula done clear
  C)
  Coeloblastula done clear
  D)
  Discoblastula done clear
  View Solution play_arrow

• question_answer47)
  How many eggs will be formed from 100 primary oocytes   [MP PMT 1997, 2000]
  A)
  300 done clear
  B)
  400 done clear
  C)
  200 done clear
  D)
  100 done clear
  View Solution play_arrow

• question_answer48)
  Blastocyst is a modified blastula of [MP PMT 1997]
  A)
  Placental mammals done clear
  B)
  Frog done clear
  C)
  Fish done clear
  D)
  Birds done clear
  View Solution play_arrow

• question_answer49)
  Cleavage is a unique form of mitotic cell division in which [CPMT 1999; JIPMER 2001]
  A)
  The nucleus does not participate done clear
  B)
  There is no growth of cells done clear
  C)
  No spindle develops to guide the cells done clear
  D)
  The plasma membranes of daughter cells do not separate done clear
  View Solution play_arrow

• question_answer50)
  Meroblastic cleavage refers to one of the following types of division of eggs [KCET 1998]
  A)
  Total done clear
  B)
  Partial done clear
  C)
  Spiral done clear
  D)
  Horizontal done clear
  View Solution play_arrow

• question_answer51)
  When centrolecithal egg of the insects divides regularly then what will happen [RPMT 2001]
  A)
  Cells surround the yolk done clear
  B)
  Yolk surround the cells done clear
  C)
  Yolk lie below the group of cells done clear
  D)
  Yolk lie above the group of cells done clear
  View Solution play_arrow

• question_answer52)
  How many divisions occur when a isolated cell is divided into 128 cells [AFMC 2002]
  A)
  64 done clear
  B)
  127 done clear
  C)
  7 done clear
  D)
  32 done clear
  View Solution play_arrow

• question_answer53)
  The attachment of the mammalian blastocyst to the uterine wall is [CBSE PMT 1993]
  A)
  Incest done clear
  B)
  Implantation done clear
  C)
  Intromission done clear
  D)
  Incorporation done clear
  View Solution play_arrow

• question_answer54)
  From the egg in gastrula stage if you remove all cells which form endoderm, the new organism will lack of [DPMT 1982]
  A)
  Eyes done clear
  B)
  Heart done clear
  C)
  Eyes and brain done clear
  D)
  Some of the visceral organs done clear
  View Solution play_arrow

• question_answer55)
  The best definition of the process of gastrulation is that, it is a process where the [AIIMS 1983; DPMT 1985]
  A)
  Single layered blastula becomes two layered done clear
  B)
  Archenteron is formed done clear
  C)
  Cells move to occupy their definite position done clear
  D)
  Zygote gets converted to a larva done clear
  View Solution play_arrow

• question_answer56)
  Ontogenetically liver and pancreas are or During embryonic development pancreas and liver develop from which germinal layer [CPMT 1973, 83, 84; MP PMT 1996]
  A)
  Ectoderm done clear
  B)
  Mesoderm done clear
  C)
  Endoderm done clear
  D)
  Blastopore done clear
  View Solution play_arrow

• question_answer57)
  Archenteron is formed during [CPMT 1984; MP PMT 2002]
  A)
  Early blastula done clear
  B)
  Morula stage done clear
  C)
  Early gastrula done clear
  D)
  Late gastrula done clear
  View Solution play_arrow

• question_answer58)
  Which of these sets of cells divide slowly [JIPMER 1993]
  A)
  Micromeres done clear
  B)
  Megameres done clear
  C)
  Blastomeres done clear
  D)
  Mesomeres done clear
  View Solution play_arrow

• question_answer59)
  True coelom develops as a split in [CBSE PMT 1990; RPMT 1995; J & K CET 2002]
  A)
  Mesoderm done clear
  B)
  Endoderm done clear
  C)
  Ectoderm done clear
  D)
  Between ectoderm and endoderm done clear
  View Solution play_arrow

• question_answer60)
  Middle gastrula is characterised by [CPMT 1993]
  A)
  Formation of yolk plug done clear
  B)
  Archenteron just beings to form done clear
  C)
  Blastopore and arhenteron are present done clear
  D)
  Yolk plug shifts towards blastopore done clear
  View Solution play_arrow

• question_answer61)
  The literal meaning of 'gastrulation' is [MP PMT 1994]
  A)
  Formation of primary germ layers done clear
  B)
  Formation of a gut done clear
  C)
  Morphogenetic movement done clear
  D)
  Commencement of organogenesis done clear
  View Solution play_arrow

• question_answer62)
  Which of the following structure originates from ectoderm [RPMT 1995]
  A)
  Stomodaeum done clear
  B)
  Proctodaeum done clear
  C)
  Mesodaeum done clear
  D)
  [a] and [b] both done clear
  View Solution play_arrow

• question_answer63)
  Blastopore is found in [MP PMT 1998]
  A)
  Blastula and is opening of archenteron done clear
  B)
  Blastula and is opening of blastocoel done clear
  C)
  Gastrula and is opening of archenteron done clear
  D)
  Gastrula and is opening of blastocoel done clear
  View Solution play_arrow

• question_answer64)
  Which of the following is not correct for gastrulation [RPMT 2002]
  A)
  Archenteron is formed done clear
  B)
  All germinal layers are formed done clear
  C)
  Morphogenetic movements done clear
  D)
  Some blastomeres & blastocoel degenerate done clear
  View Solution play_arrow

• question_answer65)
  During the course of development, cells in various regions of embryo become variable in morphology and eventually perform diverse functions. This process is known as [CBSE PMT 1989; CMC Vellore 1993]
  A)
  Rearrangement done clear
  B)
  Differentiation done clear
  C)
  Metamorphosis done clear
  D)
  Organisation done clear
  View Solution play_arrow

• question_answer66)
  If the ectoderm from neural tissue area is removed from the embryo and transplanted in place of presumptive belly ectoderm embryo will develop [AIIMS 1983; AFMC 1985]
  A)
  Without a neural tube done clear
  B)
  With a neural tube done clear
  C)
  With two ectodermal coats done clear
  D)
  With two neural tube done clear
  View Solution play_arrow

• question_answer67)
  Relative sizes of an egg cell, morula, blastula and gastrula are [CPMT 1993]
  A)
  Egg cell is largest and morula is smallest done clear
  B)
  Egg cell is smallest and gastrula is largest done clear
  C)
  Egg cell is largest and gastrula is smallest done clear
  D)
  All are of equal size done clear
  View Solution play_arrow

• question_answer68)
  In the development of man which structures are formed from splanchnopleure.
  A)
  Muscles and connective tissue of digestive tube done clear
  B)
  Vertebral column and spinal cord done clear
  C)
  Brain and its coverings done clear
  D)
  Urinogenital organs done clear
  View Solution play_arrow

• question_answer69)
  When a small piece of dorsal lip of blastopore of frog's early gastrula is transplanted into another gastrula of similar age at ventral lip, the result is [MP PMT 1990]
  A)
  Death of the graft tissue done clear
  B)
  The host gastrula undergoes abnormal development done clear
  C)
  The host gastrula remains normal and unaffected done clear
  D)
  The graft tissue induces development of another notochord in the host done clear
  View Solution play_arrow

• question_answer70)
  During the development of embryo which of the following occur first [AFMC 1995]
  A)
  Differentiation of tissue done clear
  B)
  Differentiation of cells done clear
  C)
  Differentiation of organs done clear
  D)
  Differentiation of organ system done clear
  View Solution play_arrow

• question_answer71)
  In embryonic stage RBC develops in [MP PMT 1996]
  A)
  Liver and kidney done clear
  B)
  Liver and spleen done clear
  C)
  Spleen and kidney done clear
  D)
  Liver and pancreas done clear
  View Solution play_arrow

• question_answer72)
  In both chordates and non-chordates intestine develops from [RPMT 2000]
  A)
  Pharyngeal pouch done clear
  B)
  Ectoderm done clear
  C)
  Endoderm done clear
  D)
  Mesoderm done clear
  View Solution play_arrow

• question_answer73)
  During embryonic development, the establishment of polarity along anterior/ posterior, dorsal/ventral or medial/lateral axis is called [CBSE PMT 2003]
  A)
  Pattern formation done clear
  B)
  Organizer phenomena done clear
  C)
  Axis formation done clear
  D)
  Anamorphosis done clear
  View Solution play_arrow

• question_answer74)
  The amnion and chorion consist of which type of composition
  A)
  Somatopleure done clear
  B)
  Splenchnopleure done clear
  C)
  Somatic mesoderm only done clear
  D)
  Somatic endoderm only done clear
  View Solution play_arrow

• question_answer75)
  The extra-embryonic membranes of the mammalian embryo are derived from [CBSE PMT 1994]
  A)
  Formative cells done clear
  B)
  Follicle cells done clear
  C)
  Inner cell mass done clear
  D)
  Trophoblast done clear
  View Solution play_arrow

• question_answer76)
  Chorion is found [MP PMT 1994]
  A)
  Inside the amnion done clear
  B)
  Outside the amnion done clear
  C)
  Inside the allantois done clear
  D)
  Inside the yolk sac done clear
  View Solution play_arrow

• question_answer77)
  Extra embryonic membrane amnion is not found in amphibians because [RPMT 2001]
  A)
  They lay eggs in water done clear
  B)
  Egg hatches in tadpole done clear
  C)
  Amphibious habit done clear
  D)
  They have smooth skin done clear
  View Solution play_arrow

• question_answer78)
  The permeability of the human placenta to macro-molecules is evidenced by the presence of following in foetal blood [AIIMS 1985]
  A)
  Globulin done clear
  B)
  Albumin done clear
  C)
  Anti Rh factor done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer79)
  The placental barrier between the maternal and foetal blood is minimum in [AIIMS 1992]
  A)
  Goat done clear
  B)
  Pig done clear
  C)
  Cow done clear
  D)
  Human done clear
  View Solution play_arrow

• question_answer80)
  Umbilical cord in mammals, contains [BHU 1988]
  A)
  Placenta done clear
  B)
  Umbilicus done clear
  C)
  Allantoic artery and vein done clear
  D)
  Discus poligerous done clear
  View Solution play_arrow

• question_answer81)
  Mammalian placenta has minute finger like projections called
  A)
  Chorionic villi done clear
  B)
  Chorionic network done clear
  C)
  Chorionic extensions done clear
  D)
  Chorionic plexus done clear
  View Solution play_arrow