Metamorphosis in frogs is accelerated by $.....$.

Which disease is caused by the deficiency of thyroxine in adults?

One of the following is $NOT$ a thyroid hormone. It is . . . . . . .

Consider the following statements with respect to Calcitonin:
$I$. It is non-iodised.
$II$. It is secreted by parafollicular cells.
$III$. It regulates the calcium level in blood.
$IV$. It is also called as $TCT$ (Thyrocalcitonin).
$V$. It is a hyperglycemic agent.
Select the option containing correct statements from the above given statements.

The thyroid gland is composed of $A$ lobes which are located on either side of the $B$. The lobes are interconnected with a thin flap of connective tissue called $C$. Select the correct combination for $A, B$ and $C$.

Swollen face,mental dullness,dry skin,and loss of appetite are the characteristics of: