$A$ person appears fat,short,and stocky and has a stupid look and protruding tongue due to the hormonal deficiency of:

Which of the following is referred to as the "suicide gland"?

If the thyroid gland is removed from a frog's tadpole,it will:

Read the given statements $:$
$(A)$ Hypothyroidism during pregnancy causes defective development and maturation of the growing baby.
$(B)$ Thyroxine does not require a secondary messenger.
$(C)$ Thyroxine plays a major role in the regulation of Basal Metabolic Rate $(BMR)$.
$(D)$ Hypersecretion of thyroxine could cause immunodeficiency.
How many of the above statements are correct?

$A$ man has an $I.Q.$ equivalent to that of a boy $5$ years old; this is due to the deficiency of which hormone?

Tadpoles of a frog can be made to grow into giant-sized tadpoles if they are: