Leydig cells secrete:

$A$: The secretions of male accessory glands constitute the seminal plasma,which is rich in fructose,calcium,and certain enzymes. $R$: Fructose serves as a source of energy for the sperms.

Select the $CORRECT$ match:

Column $A$	Column $B$
$i$. Seminal fluid	$a$. Corpus spongiosum
$ii$. Prostate gland	$b$. Membranous urethra
$iii$. Ejaculatory duct	$c$. Clitoris
$iv$. Erectile tissues	$d$. Fructose
	$e$. Prostaglandins

Which duct is formed by the union of the vasa efferentia and the seminiferous tubules?

The prostatic fluid forms about . . . . . . of the total volume of semen. (in $\%$)

Which of the following is the endocrine tissue of the testes?