The function of thyroxine hormone in frog is to control _______.
Growth hormone
Metamorphosis
Reproductive organs
Endocrine glands
A
Growth hormone
B
Reproductive organs
C
Metamorphosis
D
Endocrine glands
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Solution
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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.
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