Which of the following pairs of organs both secrete hormones?

Identify which of the following are major endocrine glands?
$I$. Liver $II$. Gastric gland $III$. Pituitary gland $IV$. Thyroid
Choose the correct option.

Fill in the blanks:
$Hormones$ $Target$ $gland$
$(a)$ $Hypothalamic$ $hormones$ .....................
$(b)$ $Thyrotrophin$ $(TSH)$ .....................
$(c)$ $Corticotrophin$ $(ACTH)$ .....................
$(d)$ $Gonadotrophins$ $(LH, FSH)$ .....................
$(e)$ $Melanotrophin$ $(MSH)$ .....................

Significant role in calcium balance in the body is performed by
$I$. $PTH$
$II$. $T_{4}$ and $T_{3}$
$III$. $TCT$
The correct option is

Metamorphosis of insects is regulated through which hormone?

Identify the steroid hormone.