Complete the following analogies:
$1$. Antidiuretic hormone : Diabetes insipidus :: $\beta$-cells of pancreas : ......
$2$. Corpus luteum : Progesterone :: Leydig cells : ......
$3$. $GIP$ : Gastric inhibitory peptide :: $CCK$ : ......

Identify the endocrine glands $P, Q,$ and $R$ in the given figure.
$\quad\quad\quad P \quad\quad\quad Q\quad\quad\quad R$

Match the endocrine glands with their hormones and functions correctly.

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$:
Assertion $A$: $FSH$ acts upon ovarian follicles in female and Leydig cells in male.
Reason $R$: Growing ovarian follicles secrete estrogen in female while interstitial cells secrete androgen in male human being.
In the light of the above statements,choose the correct answer from the options given below:

Identify the difference between the following pairs:
$(1)$ Neural system - Endocrine system
$(2)$ Oxytocin - Vasopressin
$(3)$ Dwarfism - Gigantism
$(4)$ $FSH - LH$

Match the name of the hormone in Column-$I$ with its source of secretion in Column-$II$ and its function in Column-$III$.

Column-$I$	Column-$II$ $\&$ Column-$III$
$(a)$ Prolactin	$(m)$ Pituitary gland,$(q)$ Development of lactiferous tubules
$(b)$ Estrogens	$(l)$ Graafian follicle,$(r)$ Secondary sexual characters in females
$(c)$ GnRH	$(n)$ Hypothalamus,$(s)$ Stimulates release of $FSH$
$(d)$ Androgen	$(o)$ Interstitial cells,$(p)$ Secondary sexual characters of males