Solve MCQs from Embryology

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sathya karri's picture
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1.Consider the following statement:

a.Sus has dedicated placenta
b.Tapla has non dduate placenta
which one of the statements iven above are /is correct
1.a ony. 2. b only  3.both a and b are correct  4. neither a nor b.

2.which one of the following act as a precious urinary bladder in which nitrogenious waste accumilated during the develoment of chick?
(a) Amnion (b) Allantos(c)somatopleure (d)Yolk sac

3.With reference to gastrulation in chick,consider the following statement
1. In gastrulation of chick,there is neither invagination nor archenteron.
2.the place of origin of endoderm is anterior part of the blastoderm
(a) 1 only (b) 2 only (c)both (d) neither 1 nor 2

4.which of the following statement is/are correct
acortical reaction of egg durn fertilizaton is necessary
a).inhibit polyspermy and solubilize the egg membrane
(b)inhibit polyspermy and harden the egg membrane
(c)solubilize the egg membrane
(d) alow polyspermy and harden the eggmembrane

5. consider the following  developmentalstages of frog
1.Neurula
2.Blastula
3.Morula
4.Gastrula
which of the above lack blastopore?
(a)1and 4(b) 2 and 3 (c)1,2,and 3 (d)2,3,and4

Pradipta Jana's picture
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Thanks

Thanks

titash007's picture
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thanks for the

thanks for the questions..which book should we follow for the embryology part.

venkata jyothsna's picture
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can u suggest any std book

can u suggest any std book for reference for this topic.....plz...

sathya karri's picture
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gilberts is good for

gilberts is good for developmental biology....these questions i got from previous papers

Raji's picture
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POST THE ANSWERS PLS

1. D
2.B
3.D
4.B
5.A

Soumi.nn's picture
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Thanks 4 the nice qs along

Thanks 4 the nice qs along with correct answers.

sathya karri's picture
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key for questions

1.neither A nor B
Non decuduate placenta:the fetal placenta seperatesfrom the maternal placenta,the endomerium,at parturtion with out damage to the uterine mucosa.
Deciduate placenta:the fetal placenta and maternal placenta are fused so that the part of the endomerium,the deciduas,is shed together with the fetal placenta at parturition.
Sus scrofa has non decidual placenta,while talpa has decidual placenta.
2.B(allontois)
3.D
During chick gastrulation cmboly involves only the epiblast and include convergence,invagination and involution through bottling process by the mesentoblast cells.
in chick no archenteron is formed during gastrulation.
The epiblast and hypoblast of area pelluceda have different fates in the corce of embryonic development,mesoderm also for the endoderm,while the hypoblast is composed of endoderm forming blastomere.
4.B
5.B.

Radhika Pullela's picture
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very nice que, thanks for

very nice que, thanks for explanation

pratimabhat22's picture
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Ans 4: d

Ans 4: d

minni's picture
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gud Q, bt anyone plz post d

gud Q, bt anyone plz post d answers...........