Final answer:
The statement that each man is born with a set number of sperm is false; men continuously produce sperm starting from puberty throughout their lives.
Step-by-step explanation:
The statement that 'Each man is born with a set number of sperm' is false. Men produce sperm throughout their lives, starting from puberty. This sperm production usually continues uninterrupted until death, although a decrease in sperm production generally occurs at older ages. A young, healthy male may produce hundreds of millions of sperm a day, but only about half of these are likely to become viable, mature sperm. Furthermore, sperm develop and mature in the seminiferous tubules in the testes, not at birth.