Do you know about gastrulation? If you don't know then just read the whole story, Gastrulation is the stage in the early embryonic development of most animals, during which the blastula is reorganized into a multilayered structure known as the gastrula. It is also defined as an early developmental process in which an embryo transforms from a one-dimensional layer of epithelial cells and reorganizes into a multilayered and multidimensional structure called the gastrula. Gastrulation is followed by organogenesis when individual organs develop within the newly formed germ layers. So let's start this quiz and explore something else about gastrulation.
1. What is the main purpose of gastrulation?
A. Formation of the fertilization
B. Formation of the five germ layers
C. Formation of the three germ layers
D. None of the above
2. How many days after fertilization does gastrulation occur?
A. Ten weeks
B. Five weeks
C. Two weeks
D. Seven weeks
3. At what stage of development does gastrulation occur?
A. Implantation
B. Cleavage stage
C. Embryo stage
D. Fertilization stage
4. Which layer is formed at the end of gastrulation?
A. The ectoderm
B. The endoderm
C. The mesoderm
D. None of these
5. How many layers are present in early gastrulation?
A. Ten layers
B. One layer
C. Five layers
D. Three layers
6. What does the top layer of cells formed during gastrulation become?
A. Endoderm
B. Mesoderm
C. Ectoderm
D. None of these
7. What is the name of the third germ layer that forms during gastrulation?
A. Endoderm
B. Ectoderm
C. Mesoderm
D. None of these
8. Which of the following is not a cell layer formed during gastrulation?
A. Endoderm
B. Ectoderm
C. Mesoderm
D. Cytoderm
9. Which cells become the gastrula?
A. The zygote
B. The Morula
C. The hollow
D. All of the above
10. What is the first step of gastrulation?
A. Invagination
B. Involution
C. Ingression
D. The embryo
11. Which of these organs is formed during gastrulation?
A. Gill
B. Heart
C. Archenteron
D. Vitelline membrane
12. In the human females, the fertilized eggs get implanted in the uterus after...................?
A. One month of fertilization
B. Two months of fertilization
C. Seven days of fertilization
D. Three weeks of fertilization
13. Egg implantation is followed by..............?
A. Gestation
B. Parturition
C. Copulation
D. Fertilization
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