What stage of preembryonic development results in a solid ball of nearly identical cells?

A) zygote
B) blastomere
C) blastocyst
D) morula

Question

What stage of preembryonic development results in a solid ball of nearly identical cells?A)  zygoteB)  blastomereC)  blastocystD)  morula

chipi chakkaravarthy · Accepted Answer

Final Answer : D, Explanation :  The stage of preembryonic development that results in a solid ball of nearly identical cells is the morula stage. At this stage, the zygote has undergone several rounds of mitotic division and has developed into a ball of approximately 16-32 cells, with no differentiation between the cells yet. The other options are not correct because:- A) zygote is the first stage of development after fertilization, when the sperm and egg fuse to form a single cell.- B) blastomere refers to any of the cells produced by the early divisions of the zygote.- C) blastocyst is a later stage of development, when the morula has developed a fluid-filled cavity called the blastocoel and differentiated into two types of cells: the inner cell mass and the trophoblast.

What stage of preembryonic development results in a solid ball of nearly identical cells?

A) zygote
B) blastomere
C) blastocyst
D) morula

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