Final answer:
The ejaculatory duct is the duct for the transfer of sperm during copulation.
Step-by-step explanation:
The ejaculatory duct is the duct for the transfer of sperm during copulation. It is formed by the joining of the ductus deferens and the duct of the seminal vesicle, and it connects the ampulla of the ductus deferens with the duct of the seminal vesicle at the prostatic urethra.