Question

The function of thyroxine hormone in frog is to control _______.

• A. Growth hormone
• B. Metamorphosis
• C. Reproductive organs
• D. Endocrine glands

Answer 1

The correct option is B Metamorphosis

Thyroxine hormone plays a major role in the metamorphosis of the frog. Metamorphosis is a process which converts larval stage to a tadpole and finally into a frog. It was proved by the ectomy (removal) of the thyroid gland in some larval stages of frog, which showed only very little growth. Hence, it was proved that thyroid gland plays a great role in the metamorphosis of the frog.

Thus, the correct answer is option B.