Solution :The Prostate gland is a single large gland that surrounds the URETHRA. It produces a SLIGHTLY alkaline, mailky secretion whichforms `25%` of the volume of semen. It PROCESSES citric acid, enzymes (acid phosphatase, amylase, pepsinogen) and prostaglandins). Secretion of the prostate gland NOURISHES and activites the speratozoa to swim.