BOTANY

Detailed explanation-1: -Urethra is a common part for both reproductive and excretory systems. Urethra acts as common passage to both urine and sperms.

Detailed explanation-2: -The testes ultimately lie in the scrotum, and the duct system is rearranged to pass from the scrotum back into the abdominal wall, in the inguinal canal, before it unites with the terminal duct of the excretory system, the urethra to enter the penis.

Detailed explanation-3: -The urethra is an organ that is common to both the reproductive and excretory systems. The urethra is the tube that connects the bladder to the outside of the body. Its function is the removal of urine from the body. It also has the function of ejaculating semen.

Detailed explanation-4: -The male reproductive system includes the testes (which produce sperm), penis, epididymis, vas deferens, ejaculatory ducts and urethra. The female reproductive system consists of the ovaries (which produce eggs or oocytes), fallopian tubes, uterus, cervix, vagina and vulva.