The hollow ball of cells formed after fertilisation is called

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Multiple Choice

The hollow ball of cells formed after fertilisation is called

Explanation:
After fertilization, the single cell begins dividing rapidly in a process called cleavage. The resulting solid ball of cells is the morula. As development continues, fluid collects inside and a cavity forms, creating a hollow ball known as the blastocyst. This stage is characterized by a surrounding outer layer of cells (which will form part of the placenta) and an inner cell mass that will become the embryo. So the hollow ball formed after fertilization is the blastocyst. The zygote is the fertilized egg before any cleavage, the morula is the solid ball before a cavity forms, and the embryo is the later stage after implantation.

After fertilization, the single cell begins dividing rapidly in a process called cleavage. The resulting solid ball of cells is the morula. As development continues, fluid collects inside and a cavity forms, creating a hollow ball known as the blastocyst. This stage is characterized by a surrounding outer layer of cells (which will form part of the placenta) and an inner cell mass that will become the embryo. So the hollow ball formed after fertilization is the blastocyst. The zygote is the fertilized egg before any cleavage, the morula is the solid ball before a cavity forms, and the embryo is the later stage after implantation.

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