Which organ is the primary source of sperm production?

• A. Accessory glands
• B. Gonads (testes)
• C. Genital ducts
• D. Penis

Answer: (B)

Producing sperm occurs in the gonads, specifically the testes, where germ cells undergo spermatogenesis in the seminiferous tubules. The testes are the primary site for forming mature sperm and also for producing testosterone, which supports male reproductive development and function. Accessory glands contribute fluids to semen but do not generate sperm, and genital ducts mainly transport or store sperm. The penis is the organ for delivering semen, not producing sperm. So the primary source of sperm production is the testes.