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question_answer1)
Pseudopregnancy is a physiological condition comparable to normal pregnancy except that there is no [AMU 1989]
A)
Developing ovum done
clear
B)
Developing foetus done
clear
C)
Corpus luteum done
clear
D)
Endometrial changes done
clear
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question_answer2)
Which of the embryo has parasite mode of nutrition. [CPMT 1980; BHU 1980]
A)
Bird's embryo done
clear
B)
Amphibian embryo done
clear
C)
Reptilian embryo done
clear
D)
Mammalian embryo done
clear
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question_answer3)
Implantation of egg is followed by
A)
Fertilization done
clear
B)
Copulation done
clear
C)
Parturition done
clear
D)
Gestation done
clear
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question_answer4)
If the nuclei from an 8-celled stage of an embryo are transplanted into enucleated eggs, which of the following events is likely to occur [MP PMT 1990]
A)
Formation of viable embryo in the recipient eggs done
clear
B)
Donor nuclei die in the new environment done
clear
C)
Cleavage occurs but is arrested after some time done
clear
D)
Recipient egg dies done
clear
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question_answer5)
Implantation is the process of [MP PMT 2002]
A)
Fertilization of egg done
clear
B)
Movement of egg done
clear
C)
Degeneration of egg done
clear
D)
Attachment of blastocyst to the uterine wall done
clear
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question_answer6)
In human female the fertilized eggs gets implanted in uterus
A)
After two months of fertilization done
clear
B)
After one month of fertilization done
clear
C)
After 3 weeks of fertilization done
clear
D)
After about 7 days of fertilization done
clear
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question_answer7)
Which one of the following list contains only the mesodermal structures [MP PMT 1992]
A)
Muscles, blood, notochord, liver done
clear
B)
Bones, blood, heart, liver done
clear
C)
Muscles, blood, heart, liver done
clear
D)
Bones, blood, heart, notochord done
clear
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question_answer8)
The endodermel derivatives include [AIIMS 1987]
A)
Thyroid done
clear
B)
Pineal gland done
clear
C)
Spleen done
clear
D)
Pituitary done
clear
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question_answer9)
During gastrulation ....... is formed [CPMT 1978; DPMT 1992]
A)
Heart done
clear
B)
Gill done
clear
C)
Archenteron done
clear
D)
Vitelline membrane done
clear
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question_answer10)
Mesoderm gives rise to all the structures except [NCERT 1984]
A)
Nervous system done
clear
B)
Muscular system done
clear
C)
Circulatory system done
clear
D)
Gonads done
clear
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question_answer11)
The nerve cells, brain and spinal cord or central nervous system develops from embryonic [CPMT 1974, 75, 80, 84; AFMC 1985; RPMT 2000]
A)
Ectoderm done
clear
B)
Endoderm done
clear
C)
Mesoderm done
clear
D)
Both [a] and [b] done
clear
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question_answer12)
The yolk plug is a structure in gastrula which is formed by the protrusion of
A)
Endodermal cells done
clear
B)
Endo-mesodermal cells done
clear
C)
Ectodermal cells done
clear
D)
Mesodermal cells done
clear
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question_answer13)
After gastrulation the roof of archenteron is formed by [CPMT 1987]
A)
Neural plate done
clear
B)
Mesoderm done
clear
C)
Ectoderm done
clear
D)
Chorda-mesoderm done
clear
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question_answer14)
Formation of notochord or the central axial chord in vertebrates is known as [CPMT 1972]
A)
Neurulation done
clear
B)
Blastulation done
clear
C)
Morulation done
clear
D)
Notogenesis done
clear
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question_answer15)
The rolling of endodermal and mesodermal cells from the surface of embryo into its interior is called [MP PMT 1987; CBSE PMT 1993]
A)
Ingression done
clear
B)
Invagination done
clear
C)
Involution done
clear
D)
Inversion done
clear
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question_answer16)
Vascular system and excretory organs are developed from [CPMT 1990; KCET 1994]
A)
Mesoderm done
clear
B)
Ectoderm done
clear
C)
Endoderm done
clear
D)
None of the above done
clear
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question_answer17)
Gastrulation is the process which involves the differentiation of the following layers in a vertebrate embryo [NCERT 1981]
A)
Ectoderm and mesoderm done
clear
B)
Ectoderm and endoderm done
clear
C)
Endoderm and mesoderm done
clear
D)
Ectoderm, endoderm and mesoderm done
clear
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question_answer18)
Which of the following is correct [CPMT 1984; MP PMT 1988, 98]
A)
Mesoderm produces brain done
clear
B)
Ectoderm produces liver done
clear
C)
Mesoderm produces skeleton done
clear
D)
Endoderm produces heart done
clear
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question_answer19)
Blastopore is found in [NCERT 1976; CPMT 1971, 74, 76, 79, 80, 81; DPMT 1993; MP PMT 1996]
A)
Gastrula done
clear
B)
Blastula done
clear
C)
Morula done
clear
D)
Neurula done
clear
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question_answer20)
The skeleton and muscles originate in the development from or During embryonic development endoskeleton and muscles develop from which germinal layer [CPMT 1979; MP PMT 1996]
A)
Ectoderm done
clear
B)
Endoderm done
clear
C)
Mesoderm done
clear
D)
Yolk plug done
clear
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question_answer21)
Which one of the following is derived from ectoderm [DPMT 1993]
A)
Enamel of teeth done
clear
B)
Dentine done
clear
C)
Skull done
clear
D)
Axial skeleton done
clear
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question_answer22)
The cavity of gastrula is called [AFMC 1985; MH-CET 2003]
A)
Blastocoel done
clear
B)
Coelom done
clear
C)
Archenteron done
clear
D)
Haemocoel done
clear
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question_answer23)
Gonads are derived from embryonic [CBSE PMT 1990]
A)
Mesoderm done
clear
B)
Endoderm done
clear
C)
Ectoderm done
clear
D)
Mesoderm and endoderm done
clear
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question_answer24)
Archenteron is lined with [CPMT 1993]
A)
Ectoderm done
clear
B)
Mesoderm done
clear
C)
Endoderm done
clear
D)
Mesoderm and endoderm done
clear
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question_answer25)
During the development of an embryo, migration and rearrangement of cells lead to a pattern formation known as [MP PMT 1994]
A)
Epiboly done
clear
B)
Emboly done
clear
C)
Involution done
clear
D)
Gastrulation done
clear
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question_answer26)
The mammalian primitive streak gives rise to [MP PMT 1994]
A)
Ectoderm done
clear
B)
Mesoderm done
clear
C)
Endoderm done
clear
D)
Germ layers done
clear
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question_answer27)
Pasteels (1945) described gastrulation takes place in aves by
A)
Infiltration done
clear
B)
Delamination done
clear
C)
Concrescence done
clear
D)
Polyinvagination done
clear
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question_answer28)
During gastrulation the dorsal lip of blastopore (1 external sign of gastrulation) appears
A)
Anteriorly in the pigmented area of egg done
clear
B)
Posteriorly in the yolky cytoplasmic area done
clear
C)
In the centre of the egg done
clear
D)
Behind the grey crescent area done
clear
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question_answer29)
Brain originates from which germ layer [RPMT 1995]
A)
Ectoderm done
clear
B)
Mesoderm done
clear
C)
Endoderm done
clear
D)
Ectomesoderm done
clear
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question_answer30)
In the first phase of gastrulation of amphibians there occurs the separation of
A)
Ectoderm done
clear
B)
Mesoderm done
clear
C)
Endoderm done
clear
D)
Mesoectoderm done
clear
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question_answer31)
In which order, three germ layers appear in the development
A)
Ectoderm-mesoderm-endoderm done
clear
B)
Ectoderm-endoderm-mesoderm done
clear
C)
Mesoderm-endoderm-ectoderm done
clear
D)
None of the above done
clear
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question_answer32)
In which stage is blastocoele formed [MP PMT 1999]
A)
Morula done
clear
B)
Blastula done
clear
C)
Gastrula done
clear
D)
None of these done
clear
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question_answer33)
The structure which differentiate gastrula from blastula [RPMT 1999]
A)
3 germ layers done
clear
B)
Micromeres done
clear
C)
Blastocoel done
clear
D)
None of these done
clear
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question_answer34)
Coelom is found between the cavity of [BHU 2000]
A)
Ectoderm and endoderm done
clear
B)
Mesoderm and ectoderm done
clear
C)
Body wall and ectoderm done
clear
D)
Mesoderm and body wall done
clear
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question_answer35)
In which stage of development the embryonic cells form the germinal layers by the movement [RPMT 2001]
A)
Morula done
clear
B)
Blastula done
clear
C)
Gastrula done
clear
D)
Neurula done
clear
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