Respuesta :
The steroid hormone that coordinates molting in arthropods is ecdysteroid.
Hence, Option A is the correct answer.
Some points about ecdysteroid, it's role and action :-
- secreted from prothoracic glands.
- also known as molting hormones.
- its biological active form is 20-hydroxyecdysone.
- regulates molting, metamorphosis, reproduction and diapause.
- its action is mediated by high-affinity binding to an intracellular membrane of class of nuclear receptor proteins.
- this receptor proteins binds to specific DNA promoter site and regulates gene expression.
Ecdysteroids are steroid hormones, seen in its active form in arthropod which is responsible for molting (shedding).
Hence, option A is correct answer.
Learn more about the role of ecdysteroid in molting:
brainly.com/question/14776004
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