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A human blastomere is ______. A. an embryonic cell that is smaller than the ovum B. an embryonic structure that includes a fluid-filled cavity C. that part of the acrosome that opens the egg's membrane D. a cell that contains a (degenerating) second polar body

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shaikhmohd0119

A human blastomere is an embryonic cell that is smaller than the ovum.

Therefore, the correct answer is Option A.

What is blastomere?

  • Blastomere is a cell which is formed after the embryonic cleavage of the zygote following fertilization.
  • In humans, the zygote divides after fertilization to form two-celled blastomere. This continues throughout the first week of embryonic development.
  • When the blastomeres are 16- 32 in number, it is called morula.
  • The total size of the embryo does not increase so after each division the cells are smaller in size.
  • The blastomere differentiates to form the inner cell mass and the trophoectoderm.
  • The inner cell mass (ICM) is the precursor of the embryo while the trophoectoderm is the precursor of the placenta.

Learn more about blastula here:

https://brainly.com/question/13154012

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