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Embryonic Development Mcq
Quiz 6
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Q.1
Formation of archenteron starts in ... ... [ MPPMET 2012]
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a) Morula
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b) Blastula
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c) Early gastrula
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d) Early neurula
Explanation
Answer : (c)
Q.2
Nereis has ... ... [ JIPMER 1999 ]
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a) Stereoblastula
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b) Discoblastula
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c) Coeloblastula
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d) Superficial blastula
Explanation
Answer : (a)
Q.3
Allantois is embryonic membrane found in ... ... [ BHU 1990 ]
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a) Mammals
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b) Birds
0%
c) Reptiles
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d) Birds, mammals and reptile
Explanation
Answer : (d)
Q.4
Fixing up of blastocyst in the wall of uterus is ... ... [ MPPMT 2002 ]
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a) Impregnation
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b) Placentation
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c) Implantation
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d) Fertilisation
Explanation
Answer : (c)
Q.5
Which of the cellular layer disintegrate and regenerates again and again in humans ... ... [ MPPMT 2004 ]
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a) Endometrium of uterus
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b) Dermis of skin
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c) Cornea of eye
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d) Endothelium of blood vessels
Explanation
Answer : (a)
Q.6
Egg with little yolk is ... ... [ RPMT 1995 ]
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a) Alecithal
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b) Microlecithal
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c) Mesolecithal
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d) Polylecithal
Explanation
Answer : (b)
Q.7
Fusion of male pronucleus with female pronucleus is ... ... [ Manipal 2005 ]
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a) Amphimixis
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b) Conjugation
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c) Penetration
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d) Transduction
Explanation
Answer : (a)
Q.8
Intestine develops from ... ... [ RPMT 2000 ]
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a) Ectoderm
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b) Endoderm
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c) Mesoderm
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d) Pharyngeal pouch
Explanation
Answer : (b)
Q.9
Internal cavity formed by cell division prior to gastrulation is .... ... [ DPMT 2010 ]
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a) Enteron
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b) Blastopore
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c) Blastocoel
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d) Coelom
Explanation
Answer : (c)
Q.10
Which extraembryonic membrane in human prevents desiccation of embryo inside uterus? ... ... [ BHU 2012 ]
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a) Yolk sac
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b) Amnion
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c) Chorion
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d) Allantois
Explanation
Answer : (b)
Q.11
Which of the following is correct sequence in embryo development. .... [ HPPMT 2005]
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a) Cleavage, gastrulation, blastulation
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b) Blastulation, cleavage, gastrulation
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c) Cleavage, blastulation, gastrulation
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d) Gastrulation, blastulation, cleavage
Explanation
Answer : (c)
Q.12
Cleidoic eggs occur in ... ... [ MPPMT 2002 [
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a) insects
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b) fishes
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c) mammals
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d) reptiles and birds
Explanation
Answer : (d)
Q.13
Olfactory epithelium develops from ... ... [ MPPMT 1991 ]
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a) Embryonic endoderm
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b) Embryonic ectoderm
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c) Embryonic mesoderm
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d) Embryonic mesenchyme
Explanation
Answer : (b)
Q.14
Hormone, human chorionic gonadotropin, is secreted by ... ...
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a) Placenta
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b) Ovary
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c) Anterior pituitary gland
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d) Posterior pituitary gland
Explanation
Answer : (a)
Q.15
Pick up correct statement about organs with dual origin from embryonic layer Hypophysis Adrenal glands Sense organs Pancreas ... ... [ BHU 2008 ]
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a) 1, 2, 3 correct
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b) 1, 2 correct
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c) 2, 4 correct
0%
d) 1, 3 correct
Explanation
Answer : (a)
Q.16
Coelom is formed by splitting of ... ... [ RPMT 1995 ]
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a) Mesoderm
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b) Ectoderm
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c) Ectoderm
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d) Megaspore
Explanation
there are two distinct ways in which coelom can form, classifying as either protostome or deuterostomes. Protostomes forms coelom when a mesoderm splits whereas the deuterostomes forms coelom when mesoderm cells combines, resultimg in the bodu cavity. Answer : (a)
Q.17
Multicellular, multinucleate, irregular mass of embryo which pass into uterine wall is ... .. [ MHTCET 2009 ]
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a) Ectoderm
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b) Endoderm
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c) Syncytiotrophoblast
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d) Amnion
Explanation
Answer : (c)
Q.18
Notochord grows from ... ... [ MPPMT 1991]
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a) Neuropore
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b) Prechordal plate
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c) Hyperchordal rod
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d) Chorda-mesoderm
Explanation
Answer : (d)
Q.19
Gastrulation comprises ... ... [ RPMT 2002 ]
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a) Morphogenetic movements
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b) Differentiation of archenteron
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c) Differentiation of three germ layers
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d) All the above
Explanation
Answer : (d)
Q.20
Assertion: In humans the gamete contributed by the male determines whether the child produced will be male or female Reason: Sex in human is polygenic trait dependent upon the cumulative effect of some gene on X-chromosome and some on Y-chromosome .... .... [ AIIMS 2005 ]
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a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
0%
b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
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c) Assertion is true but, Reason is false
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d) Assertion is false but, Reason is true
Explanation
Answer : (b)
Q.21
Coelom is space between ... ... [ JKCMEE 2004 ]
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a) Splitted mesoderm
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b) Ectoderm and endoderm
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c) Ectoderm and mesoderm
0%
d) Body wall and mesoderm
Explanation
Answer : (a)
Q.22
Eggs of placental mammals are ... ... [ MPPMT 1999 ]
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a) Homolecithal
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b) Alecithal
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c) Microlecithal
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d) Mesolecithal
Explanation
Answer : (b)
Q.23
Vascular and excretory organs are formed from ... ... [ CPMT 1990 ]
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a) Endoderm
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b) Mesoderm
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c) Ectoderm
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d) Mesendoderm
Explanation
Answer : (b)
Q.24
In which organ the bulk is formed of endoderm ... ... [ MPPMET 1990 ]
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a) intestine
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b) Liver
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c) Heart
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d) Kidney
Explanation
Answer : (b)
Q.25
Human placenta is ... ... [ AIIMS 1999]
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a) Haemochorial
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b) Syndesmochorial
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c) Yolk sac
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d) Haemo-endothelial
Explanation
Answer : (a)
Q.26
During cleavage, what is true about cells? .... ... [ CBSE 1991 ]
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a) Nucleocytoplasmic ratio remains unchanged
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b) Size does not increase
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c) There is less consumption of oxygen
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d) The division is like meiosis
Explanation
Answer : (b)
Q.27
Meroblastic cleavage takes place in ... ... [ MPPMT 1991]
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a) Hydra
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b) Amphioxus
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c) Frog
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d) Chick
Explanation
Answer : (d)
Q.28
Ontogenetically liver and pancreas are ... ... [ MPPMT 1996 ]
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a) Ectodermal
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b) Mesodermal
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c) Endodermal
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d) None
Explanation
Answer : (c)
Q.29
Heart is .... ... [ CPMT 1991 ]
0%
a) Ectodermal
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b) Mesodermal
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c) Endodermal
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d) None of the above
Explanation
Answer : (b)
Q.30
Skeleton and muscles in a vertebrate embryo develop from ... ... [ CPMT 2004 ]
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a) Ectoderm
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b) Mesoderm
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c) Endo-mesoderm
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d) Endoderm
Explanation
Answer : (b)
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