Hyperthyroidism [Graves' disease] is characterized by all the following except:

1. Toxic goiter

2. Exopthalmos

3. Bradycardia

4. Muscle weakness and termors

Graves disease is caused due to?
1. hyposecretion of thyroid gland
2. hypersecretion of thyroid gland
3. hyposecretion of adrenal gland
4. hypersecretion of adrenal gland

A pregnant female delivers a baby, who suffers from stunted growth mental retardation low intelligence quotient and abnormal skin. This is the result of
1. deficiency of iodine in diet
2. low secretion of growth hormone
3. cancer of the thyroid gland
4. over secretion of pars distalis

Name the hormone associated with the metabolism of phosphorus and calcium ?

1. glucocorticoids

2. mineralocorticoids

3. calcitonin

4. glucagon

Assertion   :       The tadpoles become giant tadpoles when fed on thiourea.

Reason      :       Thiourea is an antithyroid substance.