Question

The hormone which regulates the growth and metamorphosis in frog is

• A. Adrenaline
• B. Insulin
• C. Thyroxine
• D. Cortisol

Answer 1

The correct option is C Thyroxine

A. Adrenaline, also known as emergency hormone, is secreted from the adrenal medulla. This hormone is associated with maintenance of homeostasis in body and is secreted in response to any kind of stress or emergency in the body.

B. Insulin is secreted from the ββ-cells of islet of Langerhans and regulates blood glucose levels.

C. Thyroxine is secreted from thyroid gland. It stimulates the consumption of oxygen by metabolically active tissues and also increases the oxidation of glucose in tissues.

D. Cortisol is a glucocorticoid hormone secreted from adrenal cortex and regulates carbohydrate metabolism , storage of glycogen and increased reabsorption of sodium and water from the renal tubules.

In frogs, growth and metamorphosis (development of frog from tadpole stage to adult stage) is regulated by thyroxine gland.

So, the correct answer is 'Thyroxine'.