Which organ is responsible for sexual intercourse and the transfer of sperm in males?

The penis is the organ responsible for sexual intercourse and the transfer of sperm in males. It functions as the external reproductive organ that facilitates the delivery of sperm into the female reproductive tract during sexual activity. The erection mechanism enables penetration, while ejaculation occurs through the urethra, allowing sperm to exit the body.

Other options serve important roles within the male reproductive system but do not directly fulfill the specific function of facilitating sexual intercourse. The testes are the male gonads that produce sperm and hormones such as testosterone, while the vas deferens acts as a conduit for sperm transportation from the testes to the ejaculatory duct. The prostate gland contributes fluid to semen but does not play a direct role in the act of intercourse itself. Thus, the penis is uniquely specialized for the transfer of sperm during sexual activity.