Question

why do tadpole growing in iodine deficient waters fail to grow into frogs?​

Answer 1

Answer:

The growth and development of the animals like tadpole is controlled by the hormone called thyroxine produced by the thyroid gland. ... Thus, if the water in which tadpole is living is deficient in iodine, it retards its growth and metamorphosis. Thus, it fails to develop into adult frog.