Where are the $Leydig$ cells found?

State the location and function of Leydig cells.

Which of the following is a derivative of the $Mullerian$ duct in male rabbits?

Secretions from which one of the following are rich in fructose,calcium and some enzymes?

Assertion : Testicular lobules are the compartments present in testis.
Reason : These lobules are involved in the process of fertilization.

What happens if the $vas$ $deferens$ in humans is cut?