Question

Which of the following hormone regulates the metamorphosis of insects?

• A. Pheromone
• B. Thyroxine
• C. Ecdysone
• D. All of the above

Answer 1

The correct option is C Ecdysone

• Molting hormone or Ecdysone is produced by the prothoracic glands which regulates metamorphosis.
  
• It's principle function is to stimulate a series of physiological events (collectively known as apolysis) that lead to synthesis of a new exoskeleton.
• During this process, the new exoskeleton forms as a soft, wrinkled layer underneath the hard parts (exocuticle plus epicuticle) of the old exoskeleton.
  

So, the correct option is 'Ecdysone'.