We know that some animals do metamorphosis (change from larva to adult)

This is possible because of hormones



Insect Hormones helps insects transform from Larva to Adult


Thyroxine Hormones secreted by thyroid gland help in growth of frogs.

The production of throxine hormones requires the presense of iodine in water.

If Ponds do not have sufficient iodine, thyroxine hormone doesn’t form and tadpoles are unable to metamorphize into frogs.


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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo