General Science/Basic Science Embryology Gastrulation Sample Test,Sample questions

Question:
.Mesodermal cells are formed by

1.Involution

2.Invagination

3.Epiboly

4.Delamination


Question:
During gastrulation ectoderm completely covers the whole embryo by

1.Convergence

2.Involution

3.Invagination

4.Epiboly


Question:
During gastrulation in frog the prospective nervous system mainly expand due to

1.involution

2.Invagination

3.Epiboly

4.Delamination


Question:
During gastrulation in frog which is more active at the dorsal lip of blastopore

1.Epiboly

2.Invagination

3.Involution

4.Delamination


Question:
During gastrulation which presumptive cells are found at the animal pole

1.Epidermis

2.Nervous system

3.Notochord

4.Both 1 and 2


Question:
During organogenesis hypomere mesoderm flanks theIntermediate

1.Gut region

2.Neural tube

3.Notochord

4.Intermediate


Question:
During organogenesis the splanchnic mesoderm lies next to the

1.Ectoderm

2.Gut epithelium

3.Notochord

4.Gut endoderm


Question:
Epiboly occurs in

1.Cleavage

2.Oogenesis

3.Gastrulation

4.Organogenesis


Question:
Gastrulation in Amphioxus occurs by a process of

1.Hyperboly

2.Hypoboly

3.Delamination

4.Invagination


Question:
Heart and lymphatic system are formed from

1.Endoderm

2.Mesoderm

3.Ectoderm

4.Blastoderm


Question:
In a developing embryo the nervous system is derived from the

1.Ectoderm

2.Endoderm

3.Mesoderm

4.Blastoderm


Question:
In amphioxus gastrula achenteron is formed by the

1.Involution

2.Invagination

3.Delamination

4.Convergence


Question:
In amphioxus gastrula circular rim is called

1.Blastopore

2.Blastocoel

3.Archenteron

4.Lip of blastopore


Question:
In amphioxus gastrula which tissue lies in the dorsal lip of blastopore

1.Ectoderm

2.Endoderm

3.Mesoderm

4.Notochord


Question:
In frog gastrula mesodermal cells remain separated from the notochordal cells by

1.Convergence

2.Delamination

3.Involution

4.Invagination


Question:
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


Question:
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


Question:
In frog the lung and gills are developed from

1.Ectoderm

2.Endoderm

3.Mesoderm

4.Endometrium


Question:
In gastrulation the movement of throwing in is known as

1.Epiboly

2.Emboly

3.Hypoboly

4.Hyperboly


Question:
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


Question:
Morphogenetic movements occur during

1.Cleavage

2.Blastulation

3.Fertilization

4.Gastrulation


Question:
One of the following is not a kind of tubulation

1.Neurogenesis

2.Notogenesis

3.Mesogenesis

4.Metagenesis


Question:
One of the following is not the type of emboly

1.Involution

2.Delamination

3.Epiboly

4.Invagination


Question:
Pancreas is derived from the germinal layer of

1.Ectoderm

2.Endoderm

3.Mesoderm

4.Chorda-Mesoderm


Question:
Posterior lobe of pituitary is formed from the

1.Endoderm

2.Mesoderm

3.Endoderm

4.Blastoderm


Question:
The cavity formed during the process of gastrulation is called

1.Blastocoel

2.Archenteron

3.Sub-germinal cavity

4.Blastoderm


Question:
The formation of brain and different sensory organs is called

1.Metagenesis

2.Neurogenesis

3.Notogenesis

4.Mesogenesis


Question:
The germinal layer from which the heart kidneys and spleen are formed is

1.Ectoderm

2.Endoderm

3.Mesoderm

4.Hypoderm


Question:
The major system derived from the endoderm is

1.Nervous system

2.Lymphatic system

3.Muscular system

4.Digestive system


Question:
The mass separation of cells from one another is called

1.Epiboly

2.Invagination

3.Involution

4.Delamination


Question:
The organ that develops from ectoderm is

1.Pancreas

2.Spleen

3.Kidney

4.Eye


Question:
The organ which is produced from mesoderm after gastrulation in a frog is

1.Liver

2.Heart

3.Tongue

4.Pancreas


Question:
The process of formation of primary organ rudiment is called

1.Tubulation

2.Neurulation

3.Elongation

4.Organogenesis


Question:
The rolling in of the superficial cells over the rim of the blastopore is called

1.Invagination

2.Involution

3.Delamination

4.Epiboly


Question:
The term mesogenesis refers to the formation of

1.Notochord only

2.Mesoderm only

3.Notochord and mesoderm

4.Notochord and nerve cord


Question:
Thyroid and anterior pituitary lobe are formed from the

1.Blastoderm

2.Mesoderm

3.Endoderm

4.Ectoderm


Question:
When the micromeres divide rapidly and grow over the macromeres it is known as

1.Epiboly

2.Involution

3.Delamination

4.Gastrulation


Question:
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


Question:
Which mesoderm flanks the neural tube and notochord

1.Epimere

2.Mesomere

3.Hypomere

4.Metamere


Question:
Which of the following is called chordo-mesoderm

1.Notochord and mesoderm

2.Notochord and endoderm

3.Ectoderm and mesoderm

4.Notochord and ectoderm


Question:
Which one of the following is the mesodermal derivative

1.Pigment cells

2.Pancreas

3.Liver

4.Kidney


Question:
Yolk plug is found in the

1.Blastula of amphioxus

2.Gastula of amphioxus

3.Blastula of frog

4.Gastrula of frog


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