
The fundamental unit among them (not derived) is :
Cell Membrane because it transport nutrients into the cells and also transport toxic substances out of the cell .
Answer:
The correct answer is option 3, that is, blastomeres.
Explanation:
A kind of cell formed by cleavage of the zygote post-fertilization is called a blastomere, it is an important constituent of blastula formation. The formation of blastomere starts instantaneously post-fertilization and is carried through the initial week of the development of embryo. The division of zygote after fertilization is regarded as the first mitotic outcome of the fertilized oocyte. These mitotic divisions take place spontaneously and lead to a grouping of cells known as blastomeres.
We rely on Meiosis so that we can produce/have genetic diversity. It also enables us to have proper conditions for reproductive success.