Discussion
The human body develops from a single cell which is called :
Answer: C
The single cell is the zygote.
At fertilisation a sperm fuses with an ovum, and the resulting single diploid cell, the zygote, carries the full set of chromosomes. Repeated cell division then produces the embryo and, eventually, every tissue of the body.
The egg cell is the unfertilised ovum, which cannot develop on its own. A tissue is a group of many similar cells. The embryo is the multicellular stage that develops from the zygote, not the single cell it begins as.
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