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Study of Blastula Stages in Mammals
Study of Blastula Stages in Mammals
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1)
What is the first stage of mammalian embryonic development?
Trophoblast
Fetal blastula
Blastocyst
Trophectoderm
2)
The inner cell mass of the blastocyst will eventually give rise to which structures?
Embryonic germ layers
Extraembryonic membranes
Placenta
Trophoblast
3)
Blastopore is found in _______
Morula
Gastrula
Blastocoel
Blastula
4)
Which embryonic stage consists of a solid and compact mass of sixteen or more cells?
Blastocoel
Gastrula
Morula
Blastula
5)
What is the structure that forms from the morula in mammalian embryonic development?
Zygote
Blastocyst
Gastrula
Blastula
6)
Which of the following structures is not present in the blastula stage?
Blastocoel
Neural tube
Inner cell mass
Trophoblast
7)
What process follows the blastula stage in embryonic development?
Fertilization
Gastrulation
Cleavage
Implantation
8)
Which layer of cells in the blastocyst gives rise to the embryo itself?
Inner cell mass
Trophoblast
Blastocoel
Morula
9)
What is the type of cell division that the zygote undergoes to become a morula and then a blastula?
Gastrulation
Cleavage
Meiosis
Fertilization
10)
During cleavage, the single large zygote is converted into which form?
Multicellular embryo consisting of smaller cells called blastomeres
Multicellular embryo consisting of a zona pellucida and a zygote
Multicellular embryo with a blastopore
A three-layered embryo is called a gastrula