Metamorphosis of insects is regulated through hormone
(a) pheromone
(b) thyroxine
(c) ecdysone
(d) All of these
Correct option (c) ecdysone
Explanation:
Metamorphosis is regulated by ecdysone hormone secreted by prothoracic glands. This hormone was isolated in a crystalline form in 1954 by Butenandt and Karlson.
