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Questions and Answers
What is the name of the hollow spherical body formed by a compact heap of cells known as blastula?
What is the name of the hollow spherical body formed by a compact heap of cells known as blastula?
- Gastrula
- Blastocoel (correct)
- Blastoderm
- Archenteron
What is the term used to describe the process of formation of two or more layers of cells from the blastoderm during gastrulation?
What is the term used to describe the process of formation of two or more layers of cells from the blastoderm during gastrulation?
- Epiboly
- Invagination (correct)
- Archenteron
- Inversion
Which germinal layer gives rise to the skin epidermis and the nervous system?
Which germinal layer gives rise to the skin epidermis and the nervous system?
- Ectoderm (correct)
- Archenteron
- Mesoderm
- Endoderm
Which phase of development follows gastrulation in the embryonic development process?
Which phase of development follows gastrulation in the embryonic development process?
What is the name of the cavity in the double-walled cup formed during gastrulation?
What is the name of the cavity in the double-walled cup formed during gastrulation?
Which germinal layer forms the alimentary canal and the digestive glands?
Which germinal layer forms the alimentary canal and the digestive glands?
What is the major difference between protoplasmic and cellular animal groups?
What is the major difference between protoplasmic and cellular animal groups?
Which level of organization represents animals with specialized tissues but no organs?
Which level of organization represents animals with specialized tissues but no organs?
What distinguishes metazoans with tissues from those without tissues?
What distinguishes metazoans with tissues from those without tissues?
In which level of organization does differentiation of cytoplasm into subcellular structures occur?
In which level of organization does differentiation of cytoplasm into subcellular structures occur?
What distinguishes protoplasmic organisms from cellular organisms?
What distinguishes protoplasmic organisms from cellular organisms?
"What is one unique characteristic of metazoans at the tissue-organ level of organization?"
"What is one unique characteristic of metazoans at the tissue-organ level of organization?"
What is the term used to describe cleavage in which the cleavage furrows do not pass completely through the egg?
What is the term used to describe cleavage in which the cleavage furrows do not pass completely through the egg?
Which type of eggs experience total or holoblastic cleavage?
Which type of eggs experience total or holoblastic cleavage?
What structure is formed by the cleavage of a blastodisc?
What structure is formed by the cleavage of a blastodisc?
What factor plays a significant role in determining the age at which a young animal emerges into the world by hatching?
What factor plays a significant role in determining the age at which a young animal emerges into the world by hatching?
What occurs during the phase of development known as cleavage?
What occurs during the phase of development known as cleavage?
Which phase precedes the period of cleavage during embryonic development?
Which phase precedes the period of cleavage during embryonic development?
What is the term used to describe the cleavage of Amphioxus and eutherian mammals' eggs due to the presence of minute amounts of yolk?
What is the term used to describe the cleavage of Amphioxus and eutherian mammals' eggs due to the presence of minute amounts of yolk?
What effect does evenly distributed yolk have on the cleavage of fertilized eggs?
What effect does evenly distributed yolk have on the cleavage of fertilized eggs?
How does the uneven distribution of yolk in telolecithal eggs impact cleavage planes?
How does the uneven distribution of yolk in telolecithal eggs impact cleavage planes?
What characterizes the production of blastomeres in eggs with uneven yolk distribution?
What characterizes the production of blastomeres in eggs with uneven yolk distribution?
Why is cleavage inhibited in the yolky parts of larger eggs with sharp yolk-cytoplasm separation?
Why is cleavage inhibited in the yolky parts of larger eggs with sharp yolk-cytoplasm separation?
What is a characteristic outcome of yolk being separated sharply from cytoplasm in larger eggs?
What is a characteristic outcome of yolk being separated sharply from cytoplasm in larger eggs?
At which level of organization are animals with tissues organized into functional units called organs?
At which level of organization are animals with tissues organized into functional units called organs?
Which organism is an example of a cell-tissue grade of organization according to the text?
Which organism is an example of a cell-tissue grade of organization according to the text?
What process leads to the production of the female gamete known as ovum or egg?
What process leads to the production of the female gamete known as ovum or egg?
At what stage does meiosis begin in all oocytes in female fetuses?
At what stage does meiosis begin in all oocytes in female fetuses?
Which part of Homo sapiens is an example of the organ-system level of organization?
Which part of Homo sapiens is an example of the organ-system level of organization?
What stage do animals reach when their organs work together to perform specific functions?
What stage do animals reach when their organs work together to perform specific functions?
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