Question 2
In sexual reproduction, which cell is formed when the two germ cells join, and is the very first cell of the process that builds a new organism?
The right answer is the one marked above.
The zygote. A male gamete and a female gamete join to form it.
The ovum and the male gamete are the two germ cells that join — cells that exist before the zygote. "Germ cell" is the common name for both of them.