text: PTTH stimulates the corpora allata to prevent this process by secreting juvenile hormone.
full_question: PTTH stimulates the corpora allata to prevent this process by secreting juvenile hormone. A substage of this process ends with an eclosion which leaves behind an exuvium. Prolactin inhibits this process, whereas thyroxin promotes it. All amphibians except for (*) axolotls undergo it. A gradual form of this process known as hemimetabolism is undergone by nymphs via several rounds of ecdysis. A group of organisms that undergo this process enter an intermediate, inactive stage known as the pupa, or chrysalis. For 10 points, name this drastic post-birth transformation of an animal to its adult form, exemplified by caterpillars becoming butterflies.
first_sentence: PTTH stimulates the corpora allata to prevent this process by secreting juvenile hormone.
raw_answer: metamorphosis [or word forms; prompt on pupation; prompt on ecdysis before mentioned; prompt on molting before mentioned] 