A mature sex cell is known as a gamete, which is essential for reproduction, with sperm and egg being the two types in humans. The other options provided, such as chorion, zygote, and amnion, serve different functions in reproductive biology but are not mature sex cells. Therefore, the correct answer is gamete. ;
The correct answer is the gamete , which is the mature sex cell responsible for reproduction. Gametes include sperm and eggs in humans, while other options like chorion, zygote, and amnion serve different purposes in development and are not mature sex cells. Gametes are essential in the fertilization process, joining to form a zygote.
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