What is one of the primary roles of the seminal vesicles?

The primary role of the seminal vesicles is to add fluid to sperm. These glands are crucial in the male reproductive system as they produce a significant portion of the seminal fluid, which contains various nutrients and substances that support sperm viability and motility. This fluid is rich in fructose, which provides energy for the sperm, as well as other components that help create an optimal environment for sperm following ejaculation. The mixture of sperm and seminal fluid forms semen, which is essential for successful reproduction.

The other options, while relevant to aspects of the male reproductive system, do not directly describe the role of the seminal vesicles. Storing urine pertains to the bladder, producing sperm refers to the testes, and transporting sperm is the function of structures like the vas deferens. Thus, the seminal vesicles’ contribution of fluid is vital for preparing sperm for its role in fertilization.