EXPLANATION: Ecdysone is produced and released from the prothoracic gland located at the prothorax of the insects, which act mainly to stimulates molting or ecdysis (i.e ex-sheating of old cuticle) in insects.
Moreover, the release of ecdysone to trigger molting and metamorphosis, is stimulated by PTTH .
Furthermore, in cases where juvenile hormone is absent, an insect will still metamorphose into the adult form.
Ecdysone can be explained or known as a steroid hormone, which is being secreted by prothoracic gland. And in its active form, stimulates metamorphosis and regulates molting in insects. It is also known to be steroid hormone and derived from cholesterol.
It should be understood that the hormone is able to carry out its activities, such as molting and metamorphosis through its active metabolite 20-hydroxyecdysone (20E).
In conclusion, it should be understood that PTTH stimulates the release of ecdysone to trigger molting and metamorphosis.
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Obligate parthenogenesis is the process in which organisms exclusively reproduce through asexual means. Many species have been shown to transition to obligate parthenogenesis over evolutionary time.
