-
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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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question_answer13)
Implantation or uterine attachment of the blastocyst presumably occurs between
A)
B)
C)
D)
View Solution play_arrow
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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)
D)
Their divisions resemble ordinary mitosis done
clear
View Solution play_arrow
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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