Aldosterone stimulates the reabsorption of

When $GFR$ (Glomerular Filtration Rate) $.....P......$,the $JG$ (Juxtaglomerular) cells release $.....Q.....$ hormone.
$P\quad\quad Q$

If there is a deficiency of $ADH$ (antidiuretic hormone),what would be its effect?

Given below are two statements.
Statement $I$: Macula densa and $JG$ cells together form the $JG$ apparatus.
Statement $II$: The $JG$ apparatus plays an important role in reabsorption of glucose within kidney.
In the light of above two statements,choose the correct answer from options given below.

Water reabsorption in the distal parts of kidney tubules is regulated by

The reabsorption of salts from the glomerular filtrate is regulated by . . . . . . .