Which are true statements regarding cleavage and the blastula?Check All That ApplyCleavage is the division of a zygote into smaller and smaller cells.Cleavage is the division of a zygote into smaller and smaller cells.The blastula is a solid ball of cells.The blastula is a solid ball of cells.Cleavage generally occurs slowly.Cleavage generally occurs slowly.Cleavage patterns are identical among different animal species.Cleavage patterns are identical among different animal species.The presence of yolk may impede cleavage.
Question
Which are true statements regarding cleavage and the blastula?Check All That ApplyCleavage is the division of a zygote into smaller and smaller cells.Cleavage is the division of a zygote into smaller and smaller cells.The blastula is a solid ball of cells.The blastula is a solid ball of cells.Cleavage generally occurs slowly.Cleavage generally occurs slowly.Cleavage patterns are identical among different animal species.Cleavage patterns are identical among different animal species.The presence of yolk may impede cleavage.
Solution
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True: Cleavage is the division of a zygote into smaller and smaller cells. This is a process that occurs after fertilization, where the single-celled zygote begins to divide into multiple cells.
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False: The blastula is not a solid ball of cells. It is a hollow ball of cells. After several rounds of cell division, the zygote forms into a blastula, which is characterized by its hollow, spherical structure.
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False: Cleavage generally does not occur slowly. It is a rapid process that happens shortly after fertilization.
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False: Cleavage patterns are not identical among different animal species. The pattern of cleavage can vary widely, depending on factors such as the amount and distribution of yolk in the egg.
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True: The presence of yolk may impede cleavage. Yolk is a nutrient-rich substance found in the egg, and its presence can affect the pattern and speed of cleavage. In some cases, it can slow down or even prevent the process.
Similar Questions
True or false: The primary factor in determining the cleavage pattern of an animal embryo is the amount of yolk present in the egg.True false question.TrueFalse
Cleavage is cell division without cell
In the early stages of vertebrate development, the process of cleavage yields successive blastomeres. How are these blastomeres described?Multiple choice question.They are about the same size as the original zygote.They grow larger and larger.They become smaller and smaller.They begin cellular differentiation immediately.
During which stage of development is the egg fertilized by the sperm and the zygote undergoes cleavage?Multiple choice question.Embryonic periodFetal periodPre-embryonic period
Assertion (A) - Zygote is a multicellular structure formed from embryo by the process ofdifferentiation.Reason (R) - Zygote is formed in the oviduct.(a) Both A and R are true and R is the correct explanation of A.(b) Both A and R are true but R is not the correct explanation of A.(c) A is true but R is false.(d) A is false but R is true.
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