Role of Hormones in Completing the Life History of Insects and Frogs

Role of hormones in completing the life history of insects and frogs

Metamorphosis

• The change from larva to adult is known as metamorphosis.
• In insects it is controlled by insect hormones.
• In frog, thyroid produce thyroxin hormone for metamorphosis (change from tadpoles to adult frog).
• Sufficient iodine in the water is also important for metamorphosis.
• Insects like silk moths and some animals like frogs undergo the process of metamorphosis which results in drastic changes in their bodies.
• The insect hormones control the process of metamorphosis in the insects.
• In frogs, the thyroid releases thyroxine which controls the process of metamorphosis in them.
• The thyroxine only produces with the help of iodine that is present in the water.
• If there is a lack of iodine in water the tadpoles would never turn into adult frogs.