.Mesodermal cells are formed by
1.Involution
2.Invagination
3.Epiboly
4.Delamination
Posted Date:-2021-10-15 13:35:26
During gastrulation ectoderm completely covers the whole embryo by
1.Convergence
2.Involution
3.Invagination
4.Epiboly
Posted Date:-2021-10-15 13:35:26
During gastrulation in frog the prospective nervous system mainly expand due to
1.involution
2.Invagination
3.Epiboly
4.Delamination
Posted Date:-2021-10-15 13:35:26
During gastrulation in frog which is more active at the dorsal lip of blastopore
1.Epiboly
2.Invagination
3.Involution
4.Delamination
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During gastrulation which presumptive cells are found at the animal pole
1.Epidermis
2.Nervous system
3.Notochord
4.Both 1 and 2
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During organogenesis hypomere mesoderm flanks theIntermediate
1.Gut region
2.Neural tube
3.Notochord
4.Intermediate
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During organogenesis the splanchnic mesoderm lies next to the
1.Ectoderm
2.Gut epithelium
3.Notochord
4.Gut endoderm
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Epiboly occurs in
1.Cleavage
2.Oogenesis
3.Gastrulation
4.Organogenesis
Posted Date:-2021-10-15 13:35:26
Gastrulation in Amphioxus occurs by a process of
1.Hyperboly
2.Hypoboly
3.Delamination
4.Invagination
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Heart and lymphatic system are formed from
1.Endoderm
2.Mesoderm
3.Ectoderm
4.Blastoderm
Posted Date:-2021-10-15 13:35:26
In a developing embryo the nervous system is derived from the
1.Ectoderm
2.Endoderm
3.Mesoderm
4.Blastoderm
Posted Date:-2021-10-15 13:35:26
In amphioxus gastrula achenteron is formed by the
1.Involution
2.Invagination
3.Delamination
4.Convergence
Posted Date:-2021-10-15 13:35:26
In amphioxus gastrula circular rim is called
1.Blastopore
2.Blastocoel
3.Archenteron
4.Lip of blastopore
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In amphioxus gastrula which tissue lies in the dorsal lip of blastopore
1.Ectoderm
2.Endoderm
3.Mesoderm
4.Notochord
Posted Date:-2021-10-15 13:35:26
In frog gastrula mesodermal cells remain separated from the notochordal cells by
1.Convergence
2.Delamination
3.Involution
4.Invagination
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In frog gastrula the yolk plug is formed of
1.Yolk-free micromeres
2.Yolk-laden micromeres
3.Yolk-free macromeres
4.Yolk-laden macromeres
Posted Date:-2021-10-15 13:35:26
In frog the gastrula is rotated to bring its antero-posterior axis in a
1.Horizontal plane
2.Longitudinal plane
3.Latitudinal plane
4.Vertical plane
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In frog the lung and gills are developed from
1.Ectoderm
2.Endoderm
3.Mesoderm
4.Endometrium
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In gastrulation the movement of throwing in is known as
1.Epiboly
2.Emboly
3.Hypoboly
4.Hyperboly
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In the Gastrula of frog which of the following layers line the roof of the archenteron and floor of the archenteron respectively
1.Mesoderm Endoderm
2.Endoderm Mesoderm
3.Ectoderm Mesoderm
4.Mesoderm Ectoderm
Posted Date:-2021-10-15 13:35:26
Morphogenetic movements occur during
1.Cleavage
2.Blastulation
3.Fertilization
4.Gastrulation
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One of the following is not a kind of tubulation
1.Neurogenesis
2.Notogenesis
3.Mesogenesis
4.Metagenesis
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One of the following is not the type of emboly
1.Involution
2.Delamination
3.Epiboly
4.Invagination
Posted Date:-2021-10-15 13:35:26
Pancreas is derived from the germinal layer of
1.Ectoderm
2.Endoderm
3.Mesoderm
4.Chorda-Mesoderm
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Posterior lobe of pituitary is formed from the
1.Endoderm
2.Mesoderm
3.Endoderm
4.Blastoderm
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The cavity formed during the process of gastrulation is called
1.Blastocoel
2.Archenteron
3.Sub-germinal cavity
4.Blastoderm
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The formation of brain and different sensory organs is called
1.Metagenesis
2.Neurogenesis
3.Notogenesis
4.Mesogenesis
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The germinal layer from which the heart kidneys and spleen are formed is
1.Ectoderm
2.Endoderm
3.Mesoderm
4.Hypoderm
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The major system derived from the endoderm is
1.Nervous system
2.Lymphatic system
3.Muscular system
4.Digestive system
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The mass separation of cells from one another is called
1.Epiboly
2.Invagination
3.Involution
4.Delamination
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The organ that develops from ectoderm is
1.Pancreas
2.Spleen
3.Kidney
4.Eye
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The organ which is produced from mesoderm after gastrulation in a frog is
1.Liver
2.Heart
3.Tongue
4.Pancreas
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The process of formation of primary organ rudiment is called
1.Tubulation
2.Neurulation
3.Elongation
4.Organogenesis
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The rolling in of the superficial cells over the rim of the blastopore is called
1.Invagination
2.Involution
3.Delamination
4.Epiboly
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The term mesogenesis refers to the formation of
1.Notochord only
2.Mesoderm only
3.Notochord and mesoderm
4.Notochord and nerve cord
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Thyroid and anterior pituitary lobe are formed from the
1.Blastoderm
2.Mesoderm
3.Endoderm
4.Ectoderm
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When the micromeres divide rapidly and grow over the macromeres it is known as
1.Epiboly
2.Involution
3.Delamination
4.Gastrulation
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Which is the first indication of gastrulation in frog
1.Formation of germ ring
2.Formation of gery crescent
3.Formation of germ layers
4.Formation of archenteron
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Which mesoderm flanks the neural tube and notochord
1.Epimere
2.Mesomere
3.Hypomere
4.Metamere
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Which of the following is called chordo-mesoderm
1.Notochord and mesoderm
2.Notochord and endoderm
3.Ectoderm and mesoderm
4.Notochord and ectoderm
Posted Date:-2021-10-15 13:35:26
Which one of the following is the mesodermal derivative
1.Pigment cells
2.Pancreas
3.Liver
4.Kidney
Posted Date:-2021-10-15 13:35:26
Yolk plug is found in the
1.Blastula of amphioxus
2.Gastula of amphioxus
3.Blastula of frog
4.Gastrula of frog
Posted Date:-2021-10-15 13:35:26