Tadpoles metamorphose into frogs because of
A)decreases in iodine leading to less thyroid hormone.
B)decreases in juvenile hormone from the corpora alata.
C)increases in epinephrine from the adrenals.
D)activation of the thyroid gland and increases in growth hormone.
E)sex hormones.

Question

Quizplus · Accepted Answer

Tadpoles metamorphose into frogs due to activation of the thyroid gland and increases in growth hormone. The thyroid gland secretes thyroxine, which induces metamorphosis in tadpoles. This hormone interacts with growth hormone and regulates the development of various organs and tissues in tadpoles, leading to their transformation into adult frogs.

Tadpoles Metamorphose into Frogs Because of