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← Nature & AnimalsWhich mechanism causes pre-pupal shedding instead of larval continuation in insects?
A)Juvenile hormone secretion reduction✓
B)Ecdysone peak suppression effect
C)Prothoracicotropic hormone upregulation
D)PTTH receptor site desensitization
💡 Explanation
A sufficient drop in the secretion of Juvenile Hormone triggers a cascade of signaling termed hormonal regulation that leads to pupation because JH maintains larval characteristics, therefore, a decline rather than sustained levels initiates metamorphosis pathways rather than continued larval development.
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