In which of the following animals do the testes descend into the scrotum only during the breeding season?

Which of the following structures is found within the inguinal canal?

During early and middle fetal life,the testes are located in the:

The unpaired male accessory gland$(s)$ include:-

The path of sperm transport is given below. Provide the missing steps in blank boxes.
$\boxed{\text{Seminiferous tubules}} \to \boxed{\text{Rete testis}} \to \boxed{A} \to \boxed{\text{Epididymis}} \to \boxed{B} \to \boxed{\text{Urethra}}$

Failure of the testis to descend into the scrotum is called: